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3rd International Conference on Signal Processing, Computer Networks and Communications, SPCNC 2024

作者： Liang, Yajun Yan, Su Ma, Qian Huang, Shunlun Liu, Xin China Aerodynamics Research & Development Center Sichuan Mianyang China Science and Technology on Complex Aviation Systems Simulation Laboratory Beijing China State Key Laboratory of Air Traffic Management System Beijing China Beijing Aviation Meteorological Institute Beijing China

ISBN: (纸本)9798400710834

To enhance the convergence capability of grey wolf optimizer (GWO), this research investigates an evolved GWO using weighted-leader strategy (WLS), namely WLSGWO. The key issue of WLS is realizing the adaptive adjustment of position weighting according to the control parameters, thus well overcoming the drawback of premature convergence in the basic GWO. The newly developed method’s performance is assessed through experiments conducted on a standardized test suite. Additionally, comparisons are made by utilizing GWO alongside other advanced optimization techniques. The results of non-parametric studies validate the outperformance of the WLSGWO, thus proving the efficiency of the proposed strategy. © 2024 Copyright held by the owner/author(s).

关键词： Swarm intelligence

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Review of the Circular Economy Implementation in the Agriculture Sector: A Regional development Approach

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Circular Economy and Sustainability 2025年第2期5卷 1509-1533页

作者： Mulya, Setyardi Pratika Hudalah, Delik Salim, Wilmar Prilandita, Niken Department of Soil Science and Land Resources Faculty of Agriculture IPB University 16680 Bogor Indonesia Center for Regional System Analysis Planning and Development (CRESTPENT) IPB University 16144 Bogor Indonesia Urban and Regional Planning Study Program School of Architecture Planning and Policy Development Bandung Institute of Technology 40132 Bandung Indonesia Research Center for Infrastructure and Regional Development Bandung Institute of Technology Bandung 40132 Indonesia

Increasing urbanization and rapid resource depletion have forced authorities to shift from the traditional linear system of take-use disposal to a circular system of agricultural pratices. Circular Economy (CE) is a sustainable development approach focused on managing waste generated from the production and consumption of goods, emphasizing the principles of reduction, reuse, and recycling. CE has garnered significant attention in the agricultural sector due to its crucial role inhuman life and its implications for the livelihoods of farmers. Recently, scholars have examined the organization, impact, and measurement of CE implementation in the agricultural sector. The purpose of this paper is to conduct a comprehensive review of various implementations of CE worldwide, taking into account diverse regional characteristics. A systematic literature review was performed, encompassing three hundred and eight publications. These were categorized according to the criteria of urban areas, peri-urban areas, rural areas, and their intersections or combinations. This study identified the intersection of research themes related to CE implementation in each category to reveal the differences in CE intensity across these areas. Twelve categories were identified: raw materials, circularity, waste, processes, contributions, sector/subsector, dimensions, object type, regional aspects, procedures, purpose, and policy/systems. Furthermore, a hypothetical analysis was conducted to assess the benefits, challenges, ease of implementation, and level of circularity associated with CE practices. This study provides valuable insights for policymakers and stakeholders, helping them understand how the interconnectedness of regional aspects and urban development influences the utilization of local resources. Region-based CE policies need to be developed to ensure the continuity of cycles that occur between regions. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024.

关键词： Circular city Regional Leakage Regional Planning Sustainable development Urbanization

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Gradient-Enhanced Kriging-Based Parallel Efficient Global Optimization Algorithm and Its Application in Aerodynamic Shape Optimization

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IEEE Access 2025年 13卷 73848-73869页

作者： Fu, Hang Wang, Qingyu Nakashima, Takuji Kawasaki, Asahi Lai, Chenguang Shimizu, Keigo Bale, Rahul Tsubokura, Makoto Kobe University Graduate School of System Informatics Kobe6578501 Japan Institute of Auto Engineering BYD Auto Industry Company Ltd. Shenzhen518000 China Hiroshima University Graduate School of Advanced Science and Engineering Higashihiroshima Hiroshima739-8527 Japan Chongqing University of Technology College of Vehicle Engineering Chongqing400054 China Mazda Motor Corporation Research and Development Center Higashihiroshima Hiroshima730-8670 Japan Center for Computational Science Complex Phenomena Unified Simulation Research Team RIKEN Hyogo Kobe650-0074 Japan

The parallel efficient global optimization (EGO) algorithm was developed to leverage the rapid advancements in high-performance computing. However, conventional parallel EGO algorithm based on ordinary kriging (OK) model faces limitations when applied to complex, nonlinear, and high-dimensional engineering optimization problems, as OK model relies only on sample point locations, restricting the available training information. To further enhance the optimization potential of the parallel EGO algorithm, an improved system that integrates the parallel EGO algorithm with gradient-enhanced kriging (GEK) is proposed. The integration serves two main purposes: on the one hand, GEK provides a more comprehensive representation of the design space, improving the surrogate model’s predictive accuracy;on the other hand, as the number of infill points increases, GEK mitigates the unreliability of the pseudo expected improvement (PEI) function, facilitating the efficient search for high-quality global optima. To ensure high performance, various benchmark functions were used to evaluate the impact of different optimizers on the proposed system, ultimately identifying the most effective optimizer. Additionally, optimization tests were conducted on benchmark functions, airfoil aerodynamic optimization, and automotive aerodynamic optimization to compare the proposed system with traditional parallel EGO systems in optimization performance. The results demonstrate that the modified Gaussian bare-bones differential evolution (MGBDE) optimizer consistently accelerated convergence to high-quality solutions in most benchmark functions, achieving the highest average ranking across all tests. Compared to traditional parallel EGO system, the proposed method showed superior convergence speed, solution quality, and computational efficiency. Specifically, for airfoil and automotive aerodynamic optimization, when achieving the target performance improvements of 2.4% and 7.0%, the proposed system r

关键词： Shape optimization

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research on New Type Secondary Inerter Suspension Damping Devices for Rail Vehicles Based on Low Frequency and High Frequency Track Excitation 3

Research on New Type Secondary Inerter Suspension Damping De...

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3rd International Conference on Rail Transportation, ICRT 2024

作者： Dilai, C. Gengchen, S. Chenxu, L. Rui, S. Lixia, S. School of Railway Transportation Shanghai Institute of Technology Shanghai China China Railway Test and Certification Center Limited Beijing China Standards and Metrology Research Institute of China Academy of Railway Sciences Corporation Limited Beijing China Railway Science and Technology Research and Development Center of China Academy of Railway Sciences Corporation Limited Beijing China Wheel-Rail System Laboratory National Engineering Research Center of System Technology for High-Speed Railway and Urban Rail Transit Beijing China

ISBN: (数字)9780784485941

ISBN: (纸本)9780784485941

Different types of secondary inerter suspension vibration damping devices are established set on the Matlab platform and compare and analyzes the dynamic indicators of vehicle operation, selecting the secondary inertial suspension damping device that significantly optimizes both the quality of vehicle operation and the suppression of low-frequency and high-frequency body sway. The research results indicate that for vehicle low-frequency swaying, all four types of new dual-system inertial damping suspension devices have an optimizing effect, with Condition S5 showing the most significant improvement. Compared to the traditional suspension damping device's lateral acceleration of 1.62 m/s2, it has been optimized by 57%, achieving 0.7 m/s2. For vehicle high-frequency swaying, Condition S5 again showing the most notable improvement. Relative to the traditional suspension damping device's lateral acceleration of 0.87 m/s2, it has been optimized by 52%, reaching 0.41 m/s2. After optimizing the parameters for various conditions, the results indicate that Condition S5, with an inertial coefficient of 5,000 kg, provides the best optimization effect on the stability of the vehicle's operation. © ASCE.

关键词： Automobile suspensions

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Temperature Behaviors of Receptor of Urban Rail Vehicle in Electrical Contact with Contact Rail

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IEEE Access 2025年 13卷 82291-82301页

作者： Xing, Tong Chen, Jianhua Yu, Zhiqiang Pan, Like Sun, Jianxiang Jin, An Cui, Yuehua Feng, Tao Yan, Wenxia Yi, Xudong Zhao, Zimeng China Academy of Railway Sciences Corporation Limited National Engineering Research Center of System Technology for High-Speed Railway and Urban Rail Transit Beijing100081 China China Academy of Railway Sciences Corporation Limited Standards & Metrology Research Institute Beijing100081 China Shijiazhuang Tiedao University School of Electrical and Electronic Engineering Shijiazhuang050043 China Railway Science & Technology Research & Development Center China Academy of Railway Sciences Corporation limited Beijing10081 China

Currently, many urban rail or subway vehicles obtain electrical energy through their receptors in contact with the contact rail linked to the traction network. As urban rail vehicles arrive at the station frequently or stop temporarily on the rail line, the contact rail still needs to provide the electric power for the on-board equipments. At this point, the receptor is in a static state, where the local overheating happens. This could lead to the damage of the receptor, even causing the vehicle to stop running. Based on the electrical contact theory and Fourier's law, this paper establishes a three-dimensional thermal field finite element model for the receptor and contact rail (referred to as the boot and rail, BAR). Using the model, the change of the contact resistance under the working conditions is investigated. And the effects of the contact force, transmitted (or power supply) current and receptor wear on the temperature behaviors of the receptor are discussed. The results show that the temperature is negatively related to the contact force but closely related to the contact resistance. When the contact force is less than 100 N, the contact resistance is larger and the temperature is obviously enhanced, with the rise rate of 0.05 ℃/s. The temperature of the receptor is positively related to the transmitted current. The larger the current, the higher the temperature, more intense the temperature rise;the smaller the current, the more obvious the saturation phenomenon of the temperature, i.e. the rapid attainment of the thermal equilibrium. The larger the wear area of the BAR, the larger the convective heat flux of the receptor, leading to a lower temperature in its steady state. The innovation of this paper is to establish a three-dimensional thermal field model that can more accurately characterize the BAR system under the static electrical contact, by applying the electrical contact theory to the finite element method. Its contribution is to provide a method

关键词： Urban transportation

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Effects of Different Fertilization Treatments on the Growth,Quality,and Microbial Community Structure of Grona styracifolia

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Phyton-International Journal of Experimental Botany 2025年第3期94卷 843-860页

作者： Bingbing Zhang Minghao Li Xiaoli Huang Siqi Zheng Guorong Lai Quan Yang Xiaomin Tang School of Chinese Materia Medica Guangdong Pharmaceutical UniversityGuangzhou510006China Guangdong Provincial Research Center on Good Agricultural Practice&Comprehensive Agricultural Development Engineering Technology of Cantonese Medicinal Materials Guangzhou510006China Comprehensive Experimental Station of Guangzhou Chinese Material MedicaChina Agriculture Research System(CARS-21-16)Guangzhou510006China Key Laboratory of Production&Development of Cantonese Medicinal Materials State Administration of Traditional Chinese MedicineGuangzhou510006China

Fertilization is essential for high yield and quality in Chinese *** styracifolia(Osbeck)***,a distinctive medicinal plant in the Lingnan region,currently encounters cultivation issues stemming from the overuse of chemical *** organic and microbial fertilizers presents a sustainable solution for its cultivation *** study compared a no-fertilization control group with eight treatment groups using various concentrations of compound,organic,compound microbial,and Bacillus amyloliquefaciens fertilizers to evaluate their effects on *** and soil microbial *** results demonstrated that the different fertilization treatments significantly enhanced plant growth and quality of ***,while also increasing the activity of soil enzymes such as urease,invertase,and cellulase,as well as the levels of effective soil *** affiliation function analysis demonstrated that applying Bacillus amyloliquefaciens fertilizer(15 g/kg)exhibited optimal performance in enhancing the growth of *** and improving soil fertility *** sequencing of the soil indicated that under the application of Bacillus amyloliquefaciens fertilizer(15 g/kg),the relative abundance of Actinobacteria and Ascomycota increased significantly by 27.42%and 74.91%,respectively(p<0.05).The application of microbial-based fertilizers significantly enriched the abundance of ***,LEfSe analysis identified distinct microbial biomarkers associated with different ***,redundancy analysis identified Invertase and available potassium(AK)as the primary drivers of soil bacterial and fungal community structures,*** study demonstrated that the application of Bacillus amyloliquefaciens fertilizer(15 g/kg)significantly enhanced soil fertility and restructured microbial *** improvements led to increased yield and quality of ***,providing a s

关键词： Grona styracifolia(Osbeck)H.Ohashi growth active ingredients enzyme activity soil microorganisms

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Machine learning for membrane bioreactor research:principles,methods,applications,and a tutorial

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Frontiers of Environmental Science & Engineering 2025年第3期19卷 119-144页

作者： Yizhe Lai Kang Xiao Yifan He Xian Liu Jihua Tan Wenchao Xue Aiqian Zhang Xia Huang Beijing Yanshan Earth Critical Zone National Research Station College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 101408China Key Laboratory of Earth System Numerical Modeling and Application University of Chinese Academy of SciencesBeijing 101408China Environmental Chemistry Faculty College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 101408China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Energy Environmentand Climate ChangeSchool of EnvironmentResourcesand DevelopmentAsian Institute of TechnologyP.O.Box 4Klong LuangPathumthani 12120Thailand State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Membrane fouling poses a significant challenge to the sustainable development of membrane bioreactor(MBR)technologies for wastewater *** accurate prediction of the membrane filtration process is of great importance for identifying and controlling *** learning methods address the limitations of traditional statistical approaches,such as low accuracy,poor generalization ability,and slow convergence,particularly in predicting complex filtration and fouling processes within the realm of big *** article provides an in-depth exposition of machine learning *** study then reviews advances in MBRs that utilize machine learning methods,including artificial neural networks(ANN),support vector machines(SVM),decision trees,and ensemble *** on current literature,this study summarizes and compares the model input and output characteristics(including foulant characteristics,solution environments,filtration conditions,operating conditions,and time factors),as well as the selection of models and optimization *** modeling procedures of SVM,random forest(RF),back propagation neural network(BPNN),long short-term memory(LSTM),and genetic algorithm-back propagation(GA-BP)methods are elucidated through a tutorial *** simulation results demonstrated that all five methods yielded accurate predictions with R2>***,the existing challenges in the implementation of machine learning models in MBRs were *** is notable that integration of deep learning,automated machine learning(AutoML)and explainable artificial intelligence(XAI)may facilitate the deployment of models in practical engineering *** insights presented here are expected to facilitate the establishment of an intelligent control framework for MBR processes in future endeavors.

关键词： Membrane bioreactor Machine learning Pollutant removal Membrane fouling Model prediction

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Finite element analysis and experimental verification of the mechanical performance of a novel easy-to-splice mechanical coupler

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Computers and Concrete 2025年第2期35卷 127-136页

作者： Chung, Sukhwan Jang, Seongmin Seo, Ildong Lee, Nakyoung Chung, Wanjin Joun, Mansoo MFRC Research and Development Center 1209-A 12 Dongbu-ro 169beng-gil Gyeongsangnam-do Jinju-si52818 Korea Republic of Dae Jung Metal Co. Ltd Research and Development Center 26-62 Sangdong-ro 375ben-gil Sngdong-myeon Gyeongsangnam-do Gimhae-si50805 Korea Republic of Department of Mechanical System Design Engineering Seoul National University of Science and Technology 232 Gongneung-ro Nowon-gu Seoul01811 Korea Republic of Engineering Research Institute School of Mechanical Engineering Gyeongsang National University 103-403 501 Jinju-daero Gyeongsangnam-do Jinju-si52828 Korea Republic of

A novel easy-to-splice mechanical coupler (EtSMC) involving a sleeve, two caps, two racks, two rack guides, and two springs is introduced;this coupler easily and tightly connects two rebars through a simple manual operation (without any tool) on a construction site. The mechanical performance (including the pull force/stroke curve of the EtSMC assembly) is experimentally examined via tensile testing in air. A finite element analysis (FEA) model that minimizes simplification of the conceptual design is presented;the spring reaction is assumed to be mechanically symmetrical. The experimental tensile test is numerically analyzed using a fully implicit elastoplastic FEA function and a multi-body treatment scheme based on the tetrahedral MINI-element technique. The predictions are in qualitatively good agreement with the experimental data in terms of both the pull force/stroke curve and the damaged regions of the racks and rack guides. Small differences between the curves can be attributed to some experimental slip between parts. Copyright © 2025 Techno-Press, Ltd.

关键词： Tensile testing

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Variable stiffness design optimization of fiber-reinforced composite laminates with regular and irregular holes considering fiber continuity for additive manufacturing

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Chinese Journal of Aeronautics 2025年第3期38卷 334-354页

作者： Yi LIU Zunyi DUAN Chunping ZHOU Yuan SI Chenxi GUAN Yi XIONG Bin XU Jun YAN Jihong ZHU School of Mechanics Civil Engineering&ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China Key Lab for Airborne Hi-performance Electro-magnetic Window RISACJinan 130012China School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsInternational Research Center for Computational MechanicsDalian University of TechnologyDalian 116024China State IJR Center of Aerospace Design and Additive Manufacturing MIIT Lab of Metal Additive Manufacturing and Innovative DesignNorthwestern Polytechnical UniversityXi’an 710072China

Fiber-reinforced composites are an ideal material for the lightweight design of aerospace structures. Especially in recent years, with the rapid development of composite additive manufacturing technology, the design optimization of variable stiffness of fiber-reinforced composite laminates has attracted widespread attention from scholars and industry. In these aerospace composite structures, numerous cutout panels and shells serve as access points for maintaining electrical, fuel, and hydraulic systems. The traditional fiber-reinforced composite laminate subtractive drilling manufacturing inevitably faces the problems of interlayer delamination, fiber fracture, and burr of the laminate. Continuous fiber additive manufacturing technology offers the potential for integrated design optimization and manufacturing with high structural performance. Considering the integration of design and manufacturability in continuous fiber additive manufacturing, the paper proposes linear and nonlinear filtering strategies based on the Normal Distribution Fiber Optimization (NDFO) material interpolation scheme to overcome the challenge of discrete fiber optimization results, which are difficult to apply directly to continuous fiber additive manufacturing. With minimizing structural compliance as the objective function, the proposed approach provides a strategy to achieve continuity of discrete fiber paths in the variable stiffness design optimization of composite laminates with regular and irregular holes. In the variable stiffness design optimization model, the number of candidate fiber laying angles in the NDFO material interpolation scheme is considered as design variable. The sensitivity information of structural compliance with respect to the number of candidate fiber laying angles is obtained using the analytical sensitivity analysis method. Based on the proposed variable stiffness design optimization method for complex perforated composite laminates, the numerical examples cons

关键词： Variable stiffness composite laminates Discrete material interpolation scheme Normal distribution fiber optimization Discrete fiber continuous filtering strategy Additive manufacturing of composite laminates

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Durable Ag-Coated Micro-Crack Velcro Electrode for Hi-Fi Bioelectric Signals in Hairy Areas 38

Durable Ag-Coated Micro-Crack Velcro Electrode for Hi-Fi Bio...

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38th IEEE International Conference on Micro Electro Mechanical systems, MEMS 2025

作者： Guo, Jun Fu, Kang Zhang, Zimo Bai, Ruiyu Wang, Xuanqi Xue, Kai Chen, Huazhen Li, Le Hu, Huijing Wang, Minghao Chang, Honglong Ji, Bowen Northwestern Polytechnical University Unmanned System Research Institute China Northwestern Polytechnical University National Key Laboratory of Unmanned Aerial Vehicle Technology Integrated Research and Development Platform of Unmanned Aerial Vehicle Technology China Northwestern Polytechnical University Ministry of Education Key Laboratory of Micro/Nano Systems for Aerospace School of Mechanical Engineering China Northwestern Polytechnical University Institute of Medical Research China Hangzhou Dianzi University Moe Engineering Research Center of Smart Microsensors and Microsystems College of Electronics and Information China

ISBN: (纸本)9798331508890

This paper reports a conductive Velcro electrode with micro-cracks for the first time. The laser-induced micro-cracks increase the surface area of Velcro hooks and facilitate the adhesion of more silver particles. A cluster of Nylon-Ag hook are durable with repeated mechanical compression and multiple washing. After 100 times of compression, the plastic deformation is less than 23 μm ( © 2025 IEEE.

关键词： Hooks

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