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Optimal structural design for a certain near-space composite propeller of airship using adaptive region division blending model

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Chinese Journal of Aeronautics 2024年第5期37卷 301-316页

作者： Weigang AN Tianyu lin shigen WANG school of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China

Near-space airship is a frontier and hotspot in current military research and development,and the near-space composite propeller is the key technology for its *** order to obtain higher aerodynamic efficiency at an altitude of 22 km,a certain near-space composite propeller is designed as a long and slender aerodynamic shape with a 10 m diameter,which brings many challenges to the composite structure *** initial design is obtained by the composite structure variable stiffness design method using based on fixed region division blending ***,it weighs 23.142 kg,exceeding the required 20 *** order to meet the structural design requirements of the propeller,a variable stiffness design method using the adaptive region division blending model is proposed in this *** with the methods using the fixed region division blending model,this method optimizes region division,stacking thickness and stacking sequence in a single level,considering the coupling effect among *** a more refined region division,this method can provide a more optimal design for composite tapered ***,to improve the efficiency of optimization subjected to manufacturing constraints,a hierarchical penalty function is proposed to quickly filter out the solutions that do not meet manufacturing *** above methods combined with a Genetic Algorithm(GA)using specific encoding are adopted to optimize the near-space composite *** optimal design of the structure weighs 18.831 kg,with all manufacturing constraints and all structural response constraints being *** with the initial design,the optimal design has a more refined region division,and achieves a weight reduction of 18.6%.This demonstrates that a refined region division can significantly improve the mechanical performance of the composite tapered structure.

关键词： structural optimization Composite tapered structure Genetic algorithm Adaptive region division Manufacturing constraint Near-space composite propeller

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Mechanism study of Cu(Ⅱ) adsorption from acidic wastewater by ultrasonic-modified municipal solid waste incineration fly ash

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Chinese Journal of Chemical Engineering 2024年第3期67卷 157-165页

作者： shunda lin Yang Lu lin Zheng ling Long Xuguang Jiang Jianhua Yan state Key Laboratory of Clean Energy Utilization Institute for Thermal Power EngineeringZhejiang UniversityHangzhou 310027China Zhejiang University Qingshanhu Energy Research Center Hangzhou 310027China Hangzhou Xiaoshan Jinjiang Green Energy Co. Ltd.XiaoshanHangzhou 310000China

High concentrations of copper ions(Cu(Ⅱ)) in water will pose health risks to humans and the ecological environment. Therefore, this study aims to utilize ultrasonic-cured modified municipal solid waste incineration(MsWI) fly ash for Cu(Ⅱ) adsorption to achieve the purpose of “treating waste by waste.” The effects of p H, adsorption time, initial concentration, and temperature on the modified MsWI fly ash’s adsorption efficiency were systematically studied in this article. The adsorption performance of the modified MsWI fly ash can be enhanced by the ultrasonic modification. At pH = 2, 3 and 4, the adsorption capacity of the modified MsWI fly ash for Cu(Ⅱ) increased by 2.7, 1.9 and 1.2 times, respectively. furthermore, it was suggested that the adsorption process of the modified MsWI fly ash can be better simulated by the pseudo-second-order kinetic model, with a maximum adsorption capacity calculated by the Langmuir model of 24.196 mg.g-1. Additionally, the adsorption process is spontaneous,endothermic, and chemisorption-dominated from the thermodynamic studies(ΔH and Δs > 0, ΔG finally, the enhanced adsorption performance of the modified MsWI fly ash for Cu(Ⅱ) may be attributed to electrostatic interaction and chelation effects.

关键词： Ultrasound MsWI fly ash Cu(Ⅱ) Wastewater Adsorption

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Resource management at the network edge for federated learning

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Digital Communications and Networks 2024年第3期10卷 765-782页

作者： silvana Trindade Luiz f.Bittencourt Nelson L.s.da fonseca Institute of Computing State University of CampinasCampinasBrazil

federated learning has been explored as a promising solution for training machine learning models at the network edge,without sharing private user *** limited resources at the edge,new solutions must be developed to leverage the software and hardware resources as the existing solutions did not focus on resource management for network edge,specially for federated *** this paper,we describe the recent work on resource manage-ment at the edge and explore the challenges and future directions to allow the execution of federated learning at the *** such as the discovery of resources,deployment,load balancing,migration,and energy effi-ciency are discussed in the paper.

关键词： Resource management Edge computing federated learning Machine learning

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The physiological role of the unfolded protein response in the nervous system

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Neural Regeneration Research 2024年第11期19卷 2411-2420页

作者： shuangchan Wu Wensheng lin Department of Neuroscience University of MinnesotaMinneapolisMNUSA Institute for Translational Neuroscience University of MinnesotaMinneapolisMNUSA

The unfolded protein response(UPR)is a cellular stress response pathway activated when the endoplasmic reticulum,a crucial organelle for protein folding and modification,encounters an accumulation of unfolded or misfolded *** UPR aims to restore endoplasmic reticulum homeostasis by enhancing protein folding capacity,reducing protein biosynthesis,and promoting protein *** also plays a pivotal role in coordinating signaling cascades to determine cell fate and function in response to endoplasmic reticulum *** research has highlighted the significance of the UPR not only in maintaining endoplasmic reticulum homeostasis but also in influencing various physiological processes in the nervous ***,we provide an overview of recent findings that underscore the UPR’s involvement in preserving the function and viability of neuronal and myelinating cells under physiological conditions,and highlight the critical role of the UPR in brain development,memory storage,retinal cone development,myelination,and maintenance of myelin thickness.

关键词： myelin neuron oligodendrocyte schwann cell unfolded protein response

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set stabilization of Large-scale stochastic Boolean Networks:A Distributed Control strategy

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IEEE/CAA Journal of Automatica sinica 2024年第3期11卷 806-808页

作者： lin lin Jinde Cao Jianquan Lu Leszek Rutkowski the Department of Mechanical Engineering the University of Hong KongHong Kong China the school of Mathematics Southeast UniversityNanjing 210096China IEEE the school of Mathematics and the frontiers science Center for Mobile Information Communication and security Southeast UniversityNanjing 210096China the school of Mathematics the Southeast UniversityNanjing 210096 the school of Electronic Information and Electrical Engineering Chengdu UniversityChengdu 610106China the systems Research Institute of the Polish Academy of sciences Warsaw 01-447 the Institute of Computer science AGH University of Science and TechnologyKraków 30-059 the Information Technology Institute University of Social SciencesŁódź90-113Poland

Dear Editor,This letter deals with the set stabilization of stochastic Boolean control networks(sBCNs)by the pinning control strategy,which is to realize the full control for systems by imposing control inputs on a fr... 详细信息

关键词： Boolean stabilization letter

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A self-Attention Based Dynamic Resource Management for satellite-Terrestrial Networks

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China Communications 2024年第4期21卷 136-150页

作者： lin Tianhao Luo Zhiyong school of Electronics and Communication Engineering Sun Yat-Sen UniversityShenzhen 518107China Peng Cheng Laboratory Shenzhen 518107China

The satellite-terrestrial networks possess the ability to transcend geographical constraints inherent in traditional communication networks,enabling global coverage and offering users ubiquitous computing power support,which is an important development direction of future *** this paper,we take into account a multi-scenario network model under the coverage of low earth orbit(LEO)satellite,which can provide computing resources to users in faraway areas to improve task processing ***,LEO satellites experience limitations in computing and communication resources and the channels are time-varying and complex,which makes the extraction of state information a daunting ***,we explore the dynamic resource management issue pertaining to joint computing,communication resource allocation and power control for multi-access edge computing(MEC).In order to tackle this formidable issue,we undertake the task of transforming the issue into a Markov decision process(MDP)problem and propose the self-attention based dynamic resource management(sABDRM)algorithm,which effectively extracts state information features to enhance the training *** results show that the proposed algorithm is capable of effectively reducing the long-term average delay and energy consumption of the tasks.

关键词： mobile edge computing resource management satellite-terrestrial networks self-attention

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Broadband angular spectrum analog processors based on all-dielectric metasurfaces

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science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 188-190页

作者： lin Deng Yongmin Liu Department of Electrical and Computer Engineering Northeastern UniversityBoston 02115USA Department of Mechanical and Industrial Engineering Northeastern UniversityBoston 02115USA

Digital signal processors are extensively used to execute mathematical operations and advanced computational tasks on digital ***,they suffer from several inherent limitations,including low speed,high energy consumption,and large memory requirements,because of the hardware bottleneck and the imperative conversion between digital and analogue signals.

关键词： dielectric spectrum hardware

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A soft-contact hybrid electromagnetic–triboelectric nanogenerator for self-powered water splitting towards hydrogen production

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Nano Research 2024年第7期17卷 6567-6574页

作者： fuxue Ma Yingjie Wu shuge Dai Pei lin Junlu sun lin Dong Key Laboratory of Material Physics of Ministry of Education and School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450000China

The effective acquisition of hydrogen energy from the ocean offers a promising sustainable solution for increasing global energy ***,a self-powered high-efficient hydrogen generation system is proposed by integrating a triboelectric–electromagnetic hybrid nanogenerator(TEHG),power management circuit(PMC),and an electrolytic *** the wind triggering,as-fabricated TEHG can effectively convert breeze energy into electric energy,which demonstrates a high output current of 20.3 mA at a speed rotation of 700 rpm and the maximal output power of 13.8 mW at a load of 10 MΩ.Remarkably,asdesigned self-powered system can perform a steady and continuous water splitting to produce hydrogen(1.5μL·min^(−1))by adding a matching capacitor between the PMC and electrolytic *** the circuit,the capacitor can not only function as a charge compensation source for water splitting,but also stabilize the working *** other self-powered water splitting systems,the proposed system does not need catalysts or the complex electrical energy storage/release process,thus improving the hydrogen production efficiency and reducing the *** work provides an effective strategy for clean hydrogen energy production and demonstrates the huge potential of the constructed self-powered system toward carbon neutralization.

关键词： wind energy harvester hybrid nanogenerator energy conversion and management hydrogen energy production

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NfXL1 functions as a transcriptional activator required for thermotolerance at reproductive stage in Arabidopsis

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Journal of Integrative Plant Biology 2024年第1期66卷 54-65页

作者： Qiao‐Yun Zhu lin‐lin Zhang Jian‐Xiang Liu state Key Laboratory of Plant Environmental Resilience College of Life SciencesZhejiang UniversityHangzhou 310027China

Plants are highly susceptible to abiotic stresses,particularly heat stress during the reproductive ***,the specific molecular mechanisms underlying this sensitivity remain largely *** the current study,we demonstrate that the Nuclear Transcription factor,X-box Binding Protein 1-Like 1(NfXL1),directly regulates the expression of DEHYDRATION-REsPONsIVE ELEMENT-BINDING PROTEIN 2A(DREB2A),which is crucial for reproductive thermotolerance in ***1 is upregulated by heat stress,and its mutation leads to a reduction in silique length(seed number)under heat stress ***-seq analysis reveals that NfXL1 has a global impact on the expression of heat stress responsive genes,including DREB2A,Heat shock factor A3(HsfA3)and Heat shock Protein 17.6(HsP17.6)in flower ***,NfXL1 is enriched in the promoter region of DREB2A,but not of either HsfA3 or *** experiments using electrophoretic mobility shift assay have confirmed that NfXL1 directly binds to the DNA fragment derived from the DREB2A ***,effector-reporter assays have shown that NfXL1 activates the DREB2A *** DREB2A mutants are also heat stress sensitive at the reproductive stage,and DEREB2A is epistatic to NfXL1 in regulating thermotolerance in flower *** is known that HsfA3,a direct target of DREB2A,regulates the expression of heat shock proteins genes under heat stress ***,our findings establish NfXL1 as a critical upstream regulator of DREB2A in the transcriptional cassette responsible for heat stress responses required for reproductive thermotolerance in Arabidopsis.

关键词： Arabidopsis DREB2A heat stress NfXL1 reproductive thermotolerance

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Emerging role of lncRNAs as mechanical signaling molecules in mechanotransduction and their association with Hippo-YAP signaling:a review

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Journal of Zhejiang University-science B(Biomedicine & Biotechnology) 2024年第4期25卷 280-292页

作者： siyi lin Xinyu HE Ying WANG Yu CHEN Aifu lin College of Medicine Zhejiang UniversityHangzhou 310058China College of Life sciences Zhejiang UniversityHangzhou 310058China Cancer Center Zhejiang UniversityHangzhou 310058China Key Laboratory for Cell and Gene Engineering of Zhejiang Province Hangzhou 310058China International school of Medicine International Institutes of Medicinethe Fourth Affiliated Hospital of Zhejiang University School of MedicineYiwu 322000China Key Laboratory of Cancer Prevention and Intervention China National Ministry of EducationHangzhou 310058China future Health Laboratory Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China

Cells within tissues are subject to various mechanical forces,including hydrostatic pressure,shear stress,compression,and *** mechanical stimuli can be converted into biochemical signals through mechanoreceptors or cytoskeleton-dependent response processes,shaping the microenvironment and maintaining cellular physiological *** studies have demonstrated the roles of Yes-associated protein(YAP)and its homolog transcriptional coactivator with PDZ-binding motif(TAZ)as mechanotransducers,exerting dynamic influence on cellular phenotypes including differentiation and disease *** regulatory function entails the involvement of the cytoskeleton,nucleoskeleton,integrin,focal adhesions(fAs),and the integration of multiple signaling pathways,including extracellular signal-regulated kinase(ERK),wingless/integrated(WNT),and Hippo ***,emerging evidence substantiates the implication of long non-coding RNAs(lncRNAs)as mechanosensitive molecules in cellular *** this review,we discuss the mechanisms through which YAP/TAZ and lncRNAs serve as effectors in responding to mechanical ***,we summarize and elaborate on the crucial signal molecules involved in mechanotransduction.

关键词： YAP/TAZ Long non-coding RNA(lncRNA) Mechanotransduction f-actin

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