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Attention-Modulated Feature Fusion Neural Network for Inverse Modeling of Microwave Filters

IEEE Microwave and Wireless Technology Letters 2025年第4期35卷 376-379页

作者： Guo, Linwei Cao, Weihua Hu, Wenkai Lu, Zhengyang Wu, Min China University of Geosciences School of Automation Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education Wuhan430074 China

Inverse modeling is extensively applied in the design and tuning of microwave filters (MFs). Inverse models (IMs) take the features extracted from the high-dimensional electromagnetic parameters as input. How to make full use of features from multiple perspective is a critical issue for improving model accuracy. To solve it, this letter proposes an attention-modulated feature fusion neural network (AMFFNN). AMFFNN achieves multiperspective feature fusion (MPFF) at the input side and independent feature fusion (IFF) at the output side. In addition, feature fusion in AMFFNN is enhanced by attention modules to dynamically identify the importance of each feature. Statistical and comparative results of simulations demonstrate that AMFFNN outperforms existing methods in terms of accuracy, stability, and generalization. © 2023 IEEE.

关键词： Inverse problems

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Constructing high-biosecurity MoS_(2)-based anodes for rapid and efficient lithium storage

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Nano research 2025年第2期18卷 358-366页

作者： Yixin Wang Ruxia Qiao Xueying Zheng Wangyan Wu Hao Yang Stephanie Ling Jie Lee Jian Peng Jinyu Rong Wei Luo 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 Institute of New Energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai 201804China

Lithium-ion batteries that integrate electrochemical performance and safety considerations offer advantages to curb the reliance on fossil fuels while minimizing the potential environmental *** metal disulfides and metal oxides with high specific capacity are promising candidates as anodes for lithium ***,neither the layered structure of MoS_(2) nor the powder form of In_(2)O_(3) is ideal for battery prolonged ***,we demonstrated a low-toxicity anode designed with hollow fibers to regulate the MoS_(2) contact surface,significantly reducing biotoxicity and enhancing Lit *** functional theory(DFT)calculations revealed that the interactions among MoS_(2),In_(2)O_(3),and the hollow structure lowered the Li-ion migration energy barrier hence fastening the ***,the MoS_(2)-containing fiber showed significantly decreased toxicity in zebrafish embryos compared to MoS_(2) alone,demonstrating a proof-of-principle of integrating functional nanomaterials into flexible fiber structures to improve both electrochemical performance and safety.

关键词： electrospun fibers Li-ion battery MoS_(2) In_(2)O_(3) hollow fiber low-toxicity anode

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Modelling the dynamics of information warfare: an attacker-defender scenario using Lotka-Volterra equations

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International Journal of Information Technology (Singapore) 2025年第3期17卷 1407-1418页

作者： Pandey, Rashmikiran Pandey, Mrinal Nazarov, Alexey Nikolaevich Faculty of Radio and Computer Technology Moscow Institute of Physics & Technology Moscow 141701 Russian Federation Federal Research Center “Computer Science and Control” Russian Academy of Science Moscow 119333 Russian Federation

The dynamics of information warfare in an attacker-defender scenario pose significant challenges in today’s digital age. To address these challenges, this research models the dynamics of information warfare using modified Lotka-Volterra equations, adapted from predator-prey interactions, to simulate the interactions between attackers and defenders. The model captures the growth, interaction, and feedback loops of both populations, offering insights into their dynamics over time. By incorporating the attacker’s growth rate and the defender’s natural decline rate, and discretizing time for real-time simulation, the study reveals how attacker populations initially grow but decline as defenders enhance their countermeasures. The defender population stabilizes as their defensive capabilities improve, demonstrating the model’s effectiveness in representing the complex dynamics of information warfare. © Bharati Vidyapeeth's Institute of Computer Applications and Management 2024.

关键词： Attacker-defender Cyber security Information warfare Lotka-Volterra equations Population dynamics

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Grid-distance-based selection for fine-grained object detection in aerial images

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Pattern Recognition Letters 2025年 194卷 13-19页

作者： Zhao, Jiaqi Ou, Qingfeng Zhou, Yong Du, Wenliang Yao, Rui School of Computer Science and Technology China University of Mining and Technology Jiangsu Xuzhou221116 China Mine Digitization Engineering Research Center of the Ministry of Education Jiangsu Xuzhou221116 China Disaster Intelligent Prevention and Control and Emergency Rescue Innovation Research Center Jiangsu Xuzhou221116 China

Fine-grained object detection is a novel research direction that has recently garnered significant attention in the remote sensing field. Unlike general datasets, fine-grained datasets typically present more minor inter-class variances. Specifically, we highlight the limitations of using Intersection over Union (IoU) as a metric for label assignment. In this letter, we propose a Grid-Distance-Based Selection (GDS) method, which utilizes a newly defined grid distance metric to assess the classification potential of anchors. This approach enables positive samples to capture more discriminative features. Furthermore, relationship modeling of key regions within an object is introduced into fine-grained object detection tasks. The classification branch is enhanced by incorporating a Swin Transformer block to aggregate the aligned features from different localizations of the object. The proposed method is effective and easily to be implemented. Notably, compared to the baseline S2A-Net, our method achieves 35.89% (+2.22%) on the Fair1m-1.0 and 36.95% (+1.92%) on the Fair1m-2.0. © 2025 Elsevier B.V.

关键词： Object detection

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Dynamic properties of low-density expandable polystyrene concrete materials

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Defence Technology(防务技术) 2025年第1期43卷 94-108页

作者： Jue Han Hualin Fan Army Engineering University of PLA Nanjing 210007China Research Center of Lightweight Structures and Intelligent Manufacturing State Key Laboratory of Mechanics and Control of Aerospace StructuresNanjing University of Aeronautics and AstronauticsNanjing 210016China Henan International Joint Laboratory of Dynamics of Impact and Disaster of Engineering Structures Department of Civil EngineeringNanyang Institute of TechnologyNanyang 473004China

Expanded polystyrene(EPS)concrete,known for its environmental friendliness,energy absorption capacity,and low impedance,has significant potential application in the fields of wave absorption and vibration *** study designed and prepared EPS concrete materials with four levels of ***-static uniaxial compression and Split Hopkinson Pressure Bar(SHPB)impact tests were conducted to obtain stress-strain curves,elastic moduli,failure modes,energy absorptions,and strain rate effects of the EPS concrete under quasi-static and dynamic loading *** influences of density on various performance indicators were *** combining the Zhu-Wang-Tang(ZWT)constitutive model with a modified elastic-brittle model,a modified dynamic constitutive model was *** accuracy of the model was validated by the experimental *** results indicate that the addition of EPS particles enhances the ductility of the EPS *** EPS concrete has significant strain rate effect,which gets stronger as density *** modifiedconstitutive model accurately characterizes the dynamic stress-strain curves of the EPS concrete.

关键词： EPS concrete Impact behavior Constitutive model SHPB test

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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina Key Laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction(OER).Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER ***,most of them undergo incomplete reconstruction with limited thickness of reconstruction layer,leading to low component utilization and arduous exploration of real catalytic ***,we identify the dynamic behaviors in complete reconstruction of Co-based complexes during *** hollow phytic acid(PA)cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability,in favor of the fast and complete reconstruction.A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co(Fe)(OH)xand subsequent potential-driven oxidation to Co(Fe)*** obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm^(-2)and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER *** work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

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Modeling the modulation of beta oscillations in the basal ganglia by dual-target optogenetic stimulation

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Fundamental research 2025年第1期5卷 82-92页

作者： Xiaomin Wang Ying Yu Qingyun Wang Department of Dynamics and Control Beihang UniversityBeijing 100191China School of Mathematics and Statistics Ningxia UniversityYinchuan 750021China Ningxia Basic Science Research Center of Mathematics Yinchuan 750021China

Optogenetic techniques provide precise control over the activity of specific neurons within the nucleus,offering more accurate regulatory effects compared to deep brain *** heterogeneity of the globus pallidus externa(GPe)has garnered wide attention,wherein significant differences in pathological changes emphasize its potential as a stimulation target with distinct mechanisms.A basal ganglia-thalamus(BG-Th)network model incorporating heterogeneous GPe is developed to explore potential optogenetic stimulation targets for treating Parkinson's disease(PD).Initially,the modulation mechanisms of single-target optogenetic stimulation on the abnormal rhythmic oscillations of BG nuclei are *** of D1 medium spine neuron(MSN),calcium-binding protein parvalbumin(PV)GPe,and inhibition of globus pallidus interna(GPi)can effectively suppress synchronous bursting activity in GPi,while excitation of GPi promotes high-frequency discharge to disrupt beta ***,dual-target optogenetic stimulation strategies are devised to reduce energy *** show that targets with similar mechanisms exhibit additive effects,whereas targets with opposing mechanisms lead to *** underlying effective mechanisms of dual-target strategies are:enhancing the inhibitory input to GPi thus inhibiting the activity of GPi,or disrupting beta oscillations by restoring high-frequency discharges in *** strategy composed of exciting D1 MSN and inhibiting GPi requires the minimum total light intensity among single-target and dual-target strategies in our ***,simultaneously enhancing PV GPe and inhibiting D2 MSN achieves the greatest reduction in total energy consumption(40.8%reduction),compared to only enhancing PV *** findings unveil effective circuit mechanisms of optogenetic stimulation and provide novel insights for designing precise regulatory strategies for PD.

关键词： Dual-target optogenetic stimulation Beta oscillation Heterogeneous globus pallidus externa Parkinson's disease Computational model

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Vehicle-Signal Fusion Based Autonomous Perception Method of Subway Train Adhesion Characteristic Parameters

Vehicle-Signal Fusion Based Autonomous Perception Method of ...

引用

International Conference on Artificial Intelligence and Autonomous Transportation, AIAT 2024

作者： Ou, Dongxiu Tong, Yunwen Wang, Yanghao Dai, Shaogang Chang, Ming College of Transportation Engineering Tongji University Shanghai201804 China Shanghai Engineering Research Center of Driverless Train Control System for Railway Transportation Shanghai200072 China

ISBN: (纸本)9789819639601

To address the issue of abnormal adhesion on rail surfaces and reduce the risk of slip/slide, this paper introduces an autonomous perception method for detecting adhesion characteristic parameters in subway trains. This method combines vehicle and signal data to identify adhesion parameters, and then uses the Kiencke adhesion characteristic model along with the SLSQP optimization algorithm to extract the critical traction/braking rate. Experimental results demonstrate that this approach can accurately detect low adhesion conditions and determine the critical traction/braking rate. Based on these findings, safety strategies and operational control commands can be developed to prevent trains from losing control, significantly enhancing the safety and operational efficiency of urban rail transit systems. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Subway cars

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Harnessing the potential of zeolites for effective fluoride removal from wastewater: a review

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Environmental science and Pollution research 2025年第11期32卷 6317-6348页

作者： Asare, Justice Annor Alhassan, Sikpaam Issaka Yan, Lvji Amanze, Charles Wu, Bichao Gang, Haiying Wei, Dun Cao, Yiyun Wang, Haiying Huang, Lei School of Metallurgy and Environment Central South University Changsha410083 China Department of Materials Science & Engineering University of Florida GainesvilleFL3261 United States Department of Civil and Environmental Engineering FAMU-FSU College of Engineering Florida State University TallahasseeFL32310 United States Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution Changsha410083 China School of Environmental Science and Engineering Guangzhou University Guangzhou510006 China

Fluoride contamination in water poses significant health risks, including dental fluorosis, kidney failure, and reduced cognitive function in children. This comprehensive review examines the potential of zeolites for effective fluoride removal from wastewater. Zeolites, crystalline aluminosilicates with unique structural properties, have garnered attention due to their high adsorption capacity, low cost, and environmental compatibility. We discuss various zeolite types (natural, synthetic, and modified) and explore surface modification techniques, including chemical, composite, physical, and biological methods, to enhance fluoride adsorption capacity. Key factors influencing fluoride adsorption, such as pH, temperature, initial concentration, adsorbent dosage, and competing ions, are analyzed. The review elucidates adsorption mechanisms, including electrostatic interactions, ion exchange, Lewis acid–base interactions, and ligand exchange. Adsorption kinetics and isotherms are examined to understand process dynamics and equilibrium behavior. We compare conventional and novel zeolite synthesis methods, highlighting solvent-free approaches for sustainable production. Regeneration potential is assessed, considering environmental impact, cost, and efficiency. While zeolite-based adsorbents show promising results in laboratory settings, we emphasize the need for pilot-scale and full-scale implementations, particularly in treating real industrial wastewater. Future research directions are proposed to develop efficient, cost-effective, and environmentally friendly zeolite-based technologies for fluoride removal. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Adsorption Fluoride Modifications Synthesis Zeolite

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Cd/Pb behavior during combustion in a coal-fired power plant and their spatiotemporal impacts on soils:New insights from Cd/Pb isotopes

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Journal of Environmental sciences 2025年第4期150卷 582-593页

作者： Yafei Xia Ting Gao Yuhui Liu Meng Qi Jian-Ming Zhu Hui Tong Yiwen Lv Chengshuai Liu State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementGuangdong Institute of Eco-environmental Science&TechnologyGuangdong Academy of SciencesGuangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesBeijing 100083China

Coal power plants annually generate quantities of byproducts that release environmentally hazardous heavy metals like Cd and *** the behavior and spatiotemporal impacts on soils of these releases is crucial for pollution *** study investigated the concentrations and isotope ratios of Cd/Pb in combustion byproducts,depositions and soils collected froma coal-fired power plant or its surrounding *** pulverized fuel ash(PFA)and desulfurized gypsum(DG)exhibited heavier Cd isotopes withΔ^(114)Cd values of 0.304‰and 0.269‰,respectively,while bottom ash(BA)showed lighter Cd isotopes(Δ^(114)CdBA-coal=–0.078‰),compared to feed *** proposed a two-stage condensation process that governs the distribution of Cd/Pb,including accumulation on PFA and DG within electrostatic precipitators and desulfurization unit,as well as condensation onto fine particles upon release from the *** from combustion and large-scale transport make a significant contribution to deposition,while the dispersion of Cd/Pb in deposition is primarily influenced by the prevailing wind ***,the distribution of Cd/Pb in soils not only exhibit predominant wind control but is also potentially influenced by the resuspension of long-term storage *** power plant significantly contributes to soil in the NW–N–NE directions,even at a considerable distance(66%–79%),demonstrating its pervasive impact on remote regions along these ***,based on the vertical behavior in the profile,we have identified that Cd tends to migrate downward through leaching,while variations in Pb respond to the historical progression of dust removal.

关键词： Heavy metal diffusion Coal combustion Source tracing Atmospheric deposition Isotope fractionation Soil pollution

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