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An intelligent Framework for Resilience Recovery of FANETs with spatio-Temporal Aggregation and Multi-Head Attention Mechanism

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Computers, Materials & Continua 2024年第5期79卷 2375-2398页

作者： Zhijun Guo yun sun YingWang chaoqi Fu Jilong Zhong Air Traffic Control and Navigation College Air Force Engineering UniversityXi’an710000China institute of systems Engineering Academy of Military ScienceBeijing100101China Equipment Management and UAV Engineering College Air Force Engineering UniversityXi’an710038China Defense innovation institute Academy of Military ScienceBeijing100071China

Due to the time-varying topology and possible disturbances in a conflict environment,it is still challenging to maintain the mission performance of flying Ad hoc networks(FANET),which limits the application of Unmanned Aerial Vehicle(UAV)swarms in harsh *** paper proposes an intelligent framework to quickly recover the cooperative coveragemission by aggregating the historical spatio-temporal network with the attention *** mission resilience metric is introduced in conjunction with connectivity and coverage status information to simplify the optimization model.A spatio-temporal node pooling method is proposed to ensure all node location features can be updated after destruction by capturing the temporal network *** with the corresponding Laplacian matrix as the hyperparameter,a recovery algorithm based on the multi-head attention graph network is designed to achieve rapid *** results showed that the proposed framework can facilitate rapid recovery of the connectivity and coverage more effectively compared to the existing *** results demonstrate that the average connectivity and coverage results is improved by 17.92%and 16.96%,respectively compared with the state-of-the-art ***,by the ablation study,the contributions of each different improvement are *** proposed model can be used to support resilient network design for real-time mission execution.

关键词： Resilience cooperative mission FANET spatio-temporal node pooling multi-head attention graph network

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A Non-iterative Network Utilization Pricing Mechanism for P2P Energy Trading

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CsEE Journal of Power and Energy systems 2024年第3期10卷 1301-1306页

作者： yun Liu yunqiang Gao Yuanzheng Li Jizhong Zhu Hoay Beng Gooi school of Electric Power Engineering South China University of TechnologyGuangzhou 510641China school of Artificial intelligence and Automation Ministry of Education Key Laboratory of Image Processing and Intelligence ControlHuazhong University of Science and TechnologyWuhan 430074China school of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore iEEE

To sustain operation and maintenance of an active distribution network(ADN),a network fee should be charged by the distribution network service provider(DNsP)for facilitating the P2P energy trading *** this end,this paper models the interaction among the DNsP and multiple prosumers as a stackelberg game,and then develops a non-iterative and decentralized transactive mechanism to simultaneously achieve optimal network utilization pricing and peer-to-peer(P2P)*** results in an ADN with four prosumers connected to a common substation bus validate the effectiveness and efficiency of the proposed scheme.

关键词： Distribution network service provider network fee non-iterative peer-to-peer trading prosumer

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slowly rotating charges from Weyl double copy for Kerr black hole with chern–simons correction

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Communications in Theoretical Physics 2024年第8期76卷 141-148页

作者： Yi-Ran Liu Jing-Rui Zhang yun-Long Zhang school of Fundamental Physics and Mathematical sciences Hangzhou Institute for Advanced StudyUCAS CAs Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences University of chinese Academy of sciences National Astronomy Observatories Chinese Academy of Science international Center for Theoretical Physics Asia-Pacific

The Weyl double copy builds the relation between gauge theory and gravity theory, in particular the correspondence between gauge solutions and gravity solutions. in this paper, we obtain the slowly rotating charge solutions from the Weyl double copy for the Kerr black hole with small chern–simons correction. Based on the Weyl double copy relation, for the Petrov type D solution in chern–simons modified gravity, we find the additional correction to the electromagnetic field strength tensor of the rotating charge. For the Petrov type i solution, we find that the additional electromagnetic field strength tensors have external sources, while the total sources vanish at the leading order.

关键词： chern-simons modified gravity Kerr black hole Weyl double copy

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Review on birefringence in borates based on birefringence-active functional groups and arrangements

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science china chemistry 2024年第7期67卷 2155-2170页

作者： Qianzhen Zhang Ran An Zhihua Yang Xifa Long shilie Pan yun Yang Research Center for Crystal Materials State Key Laboratory of Functional Materials and Devices for Special Environmental ConditionsXinjiang Key Laboratory of Functional Crystal MaterialsThe Xinjiang Technical Institute of Physics&ChemistryChinese Academy of SciencesUrumqi 830011China Center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

As a fundamental parameter of the optical crystals,birefringence plays a vital role in many optical applications,such as phase modulation,light splitting,and polarization,especially the phase matching process of the nonlinear optical *** big birefringence not only benefits to the miniaturization of related devices,but also broadens the phase-matching wavelength range of nonlinear optical *** design and synthesis of crystals with large birefringence becomes a hot research topic due to its more and more important applications in the optical modulation and laser technology ***,crystals with birefringence greater than 0.05 in the borate system are reviewed and classified according to different birefringent active groups,and the relationship between structure and properties is thoroughly *** is hoped that this review will provide a clear understanding of what kinds of building units and arrangements would have more opportunity to get adequate birefringence in borate systems and provide the statistical references to encourage the emergence of better crystal materials with large birefringence.

关键词： birefringence borate optical functional crystal structural anisotropy arrangement of functional units

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A novel Effective Panicle Number per Plant 4 haplotype enhances grain yield by coordinating panicle number and grain number in rice

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The Crop Journal 2024年第1期12卷 202-212页

作者： yun Wang Xiaoqian Wang Laiyuan Zhai sundus Zafar Congcong shen shuangbing Zhu Kai chen yun Wang Jianlong Xu state Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China state Key Laboratory of Crop Biology College of AgronomyShandong Agricultural UniversityTai’an 271018ShandongChina shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120GuangdongChina Rice Research.institute Shenyang Agricultural UniversityShenyang 110866LiaoningChina National Nanfan Research.institute(sanya) Chinese Academy of Agricultural SciencesSanya 572024HainanChina

increas.ng effective panicle number per plant(EPN)is one approach to increase yield potential in ***,molecular mechanisms underlying EPN remain *** this study,we integrated mapbased cloning and genome-wide association analysis to identify the EPN4 gene,which.is allelic to NARROW LEAF1(NAL1).Overexpression lines containing the Teqing allele(TQ)of EPN4 had significantly increased ***-EPN4^(TQ) in japonica(geng)cultivar Lemont(LT)exhibited significantly improved EPN but decreased grain number and flag leaf size relative to *** analysis indicated that accessions with EPN4-1 had medium EPN,medium grain number,and medium grain weight,but had the highest grain yield among seven haplotypes,indicating that EPN4-1 is an elite haplotype of EPN4 for positive coordination of the three components of grain ***,accessions carrying the combination of EPN4-1 and haplotype GNP1-6 of GNP1 for grain number per panicle showed higher grain yield than those with other allele ***,pyramiding of EPN4-1 and GNP1-6 could be a preferred approach to obtain high yield potential in breeding.

关键词： Rice Effective panicle number per plant Grain number per panicle Haplotype Grain yield potential

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The role of inflammasomes in human diseases and their potential as therapeutic targets

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signal Transduction and Targeted Therapy 2024年第2期9卷 479-508页

作者： Jing Yao Keenan sterling Zhe Wang yun Zhang Weihong s.ng The National Clinical Research Center for Geriatric Disease Xuanwu HospitalCapital Medical UniversityBeijing 100053China Townsend Family Laboratories Department of PsychiatryBrain Research CenterThe University of British Columbia2255 Wesbrook MallVancouverBC V6T 1Z3Canada Key Laboratory of Neurodegenerative Diseases Ministry of EducationBeijingP.R.China Zhejiang Clinical Research Center for Mental Disorders Key Laboratory of Alzheimer’s Disease of Zhejiang ProvinceSchool of Mental Health and The Affiliated Kangning HospitalInstitute of AgingWenzhou Medical UniversityWenzhouZhejiang 325000China Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)WenzhouZhejiang 325000China

inflammasomes are large protein complexes that play a major role in sens.ng inflammatory signals and triggering the innate immune *** inflammasome complex has three major components:an upstream sensor molecule that is connected to a downstream effector protein such as caspase-1 through the adapter protein *** formation typically occurs in response to infectious agents or cellular *** active inflammasome then triggers caspase-1 activation,followed by the secretion of pro-inflammatory cytokines and pyroptotic cell *** inflammasome activation and activity contribute to the development of diabetes,cancer,and several cardiovascular and neurodegenerative *** a result,recent research has increas.ngly focused on investigating the mechanisms that regulate inflammasome assembly and activation,as well as the potential of targeting inflammasomes to treat various *** clinical trials are currently underway to evaluate the therapeutic potential of several distinct inflammasome-targeting ***,understanding how different inflammasomes contribute to disease pathology may have significant implications for developing novel therapeutic *** this article,we provide a summary of the biological and pathological roles of inflammasomes in health and *** also highlight key evidence that suggests targeting inflammasomes could be a novel strategy for developing new disease-modifying therapies that may be effective in several conditions.

关键词： inflam therapeutic potential

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infiltration,runoff,and slope stability behaviors of infinite slope with macropores based on an improved Green–Ampt model

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Journal of Mountain science 2024年第7期21卷 2220-2235页

作者： Li shanghui WU Guoxiong QUE yun JiAng Zhenliang chEng Gaoyun College of intelligent Construction Fuzhou University of International Studies and TradeFuzhou 350202China College of Civil Engineering Chongqing Jiao Tong UniversityChongqing 400074China chongqing Vocational College of Architectural Engineering Chongqing 400072China College of Civil Engineering Fuzhou UniversityFuzhou 350000China Department of Civil and Environmental Engineering Hong Kong University of Science and TechnologyHong Kong 999077China T.Y.Lin international Engineering Consulting(china)Co.Ltd Chongqing 401120China

infiltration–runoff–slope instability mechanism of macropore slope under heavy rainfall is *** paper studied its instability mechanism with an improved Green–Ampt(GA)model considering the dual-porosity(i.e.,matrix and macropore)and ponding condition,and proposed the infiltration equations,infiltration–runoff coupled model,and safety factor calculation *** show that the infiltration processes of macropore slope can be divided into three stages,and the proposed model is rational by a comparative *** wetting front depth of the traditional unsaturated slope is 17.2%larger than that of the macropore slope in the early rainfall stage and 27%smaller than that of the macropore slope in the late rainfall ***,macropores benefit the slope stability in the early rainfall but not in the *** flow does not occur initially but becomes pronounced with increas.ng rainfall *** equal depth of the wetting front in the two domains is regarded as the onset criteria of macropore *** analysis shows that macropore flow is delayed by increas.ng proportion of macropore domain(ω_(f)),whereas promoted by increas.ng ratio of saturated permeability coefficients between the two domains(μ).The increas.ng trend of ponding depth is sharp at first and then grows ***,when rainfall duration is less than 3 h,ωf andμhave no significant effect on the safety factor,whereas it decreases with increas.ngωf and increases with increas.ngμunder longer duration(≥3 h).With the increase ofω_(f),the slope maximum instability time advances by 10.5 h,and with the increase ofμ,the slope maximum instability time delays by 3.1 h.

关键词： Macropore slope Green–Ampt infiltration model Equivalent wetting front Ponding response time slope stability

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Organic Brønsted Acid-Catalyzed stereoselective Cationic RAFT Polymerization:The Effect of RAFT Agents

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chinese Journal of Polymer science 2024年第6期42卷 711-717页

作者： Zheng-Yi Zhang Zan Yang yun Liao sai-Hu Liao Key Laboratory of Molecule synthesis and Function Discovery(Fujian Province University) College of ChemistryFuzhou UniversityFuzhou350108China state Key Laboratory of Physical chemistry of solid surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Beijing National Laboratory for Molecular sciences Beijing100190China

The tacticity of vinyl polymers is a key factor affecting the properties of ***,organic Brønsted acids have been demonstrated as effective catalysts for the development of highly stereoselective cationic reversible addition-fragmentation ch.in transfer(RAFT)polymerizations of vinyl ethers,in which the use of RAFT agents could allow the control the molecular weight and tacticity of polymer products ***,the effect of RAFT agents on the tacticity-regulation remains elusive and lacks of *** this study,we synthesized four types of RAFT agents and evaluated their influence in the stereoselective cationic polymerization of isobutyl vinyl ether in the presence of PADi as a Brønsted acid catalyst,which unveils that the Z group of RAFT agents could not only affect the polydispersity of the products,but also exert a profound effect on the *** extensive screening of the RAFT agents,high stereoregularity(isotacticity,90%m)was obtained when us.ng dithiocarbonate ester-type RAFT agents with a benzyloxy Z group.

关键词： Bronsted acid catalysis stereoselective cationic polymerization RAFT polymerization ch.in transfer agents Tacticity

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Universal paradigm of ternary metacomposites with tunable epsilon-negative and epsilon-near-zero response for perfect electromagnetic shielding

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Rare Metals 2024年第2期43卷 796-809页

作者： yun-Peng Qu yun-Lei Zhou Yang Luo Yao Liu Jun-Fei Ding Yan-Li chen Xiu Gong Jing-Liang Yang Qiong Peng Xiao-si Qi College of Physics Guizhou UniversityGuiyang550025China Hangzhou institute of Technology Xidian UniversityHangzhou311231China Department of Materials ETH Zurich8093ZurichSwitzerland Key Laboratory for Liquid-solid structural Evolution and Process.ng of Materials(Ministry of Education) Shandong UniversityJinan250061China

CaCu_(3)Ti_(4)O_(12)(CCTO)ceramic nanocomposites incorporating graphene–carbon black(GRCB)fillers were fabricated by spark plasma sintering *** percolative effects of conductive GRCB fillers on dielectric response of GRCB/CCTO ternary metacomposites were systematically *** weakly real permittivity(ε′)-negative response(ε′~−1×10^(2))was achieved which originated from weakly low-frequency plasmonic state of free carriers within constructed GRCB *** enhancing three-dimensional GRCB network,the plasma frequency of metacomposites increased while the damping factor ***,theε′-negative values of metacomposites were tuned from−10^(2) to−10^(4) orders of magnitude andε′-near-zero(ENZ)frequencies from~142 to~340 MHz which substantially benefited from the moderate carrier concentration of GRCB dual *** Drude model and equivalent circuit models were adopted to demonstrate dielectric and electrical *** obtained metacomposites show strong EM shielding effect along with enhanced plasmonic oscillation and even better achieving perfect EM shielding effect in ENZ *** work achieves the tunableε′-negative andε′-near-zero response and more importantly clarifies its regulation mechanism in ceramic-based ternary metacomposites,which opens up the possibility of designing high-performance EM shielding materials based on metacomposites.

关键词： Metacomposites Ceramic matrix composites Negative permittivity Epsilon-near-zero Electromagnetic shielding

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Failure mechanism and infrared radiation characteristic of hard siltstone induced by stratification effect

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Journal of Mountain science 2024年第3期21卷 1058-1074页

作者： chEng yun s.ng Zhanping XU Zhiwei YAng Tengtian TiAN Xiaoxu school of Civil Engineering Yancheng Institute of TechnologyYancheng 224051China school of Civil Engineering Xi'an University of Architecture and TechnologyXi'an 710055China shaanxi Key Laboratory of Geotech.ical and Underground space Engineering Xi'an 710055China china Railway Construction Bridge Engineering Bureau Group Co. Ltd.Tianjin 300300China

The deformation in sedimentary rock induced by train loads has potential threat to the safe operation of tunnels. This study investigated the influence of stratification structure on the infrared radiation and temporal damage mechanism of hard siltstone. The uniaxial compression tests, coupled with acoustic emission(AE) and infrared radiation temperature(iRT) were conducted on siltstones with different stratification effects. The results revealed that the stratigraphic structure significantly affects the stress-strain response and strength degradation characteristics. The mechanical parameters exhibit anisotropy characteristics, and the stratification effect exhibits a negative correlation with the cracking stress and peak stress. The failure modes caused by the stratification effect show remarkable anisotropic features, including splitting failure(Ⅰ: 0°-22.50°, Ⅱ: 90°), composite failure(45°), and shearing failure(67.50°). The AE temporal sequences demonstrate a stepwise response characteristic to the loading stress level. The AE intensity indicates that the stress sensitivity of shearing failure and composite failure is generally greater than that of splitting failure. The iRT field has spatiotemporal migration and progressive dissimilation with stress loading and its dissimilation degree increases under higher stress levels. The stronger the stratification effect, the greater the dissimilation degree of the iRT field. The abnormal characteristic points of average infrared radiation temperature(AiRT) variance at local stress drop and peak stress can be used as early and late precursors to identify fracture instability. Theoretical analysis shows that the competitive relationship between compaction strengthening and fracturing damage intensifies the dissimilation of the infrared thermal field for an increas.ng stress level. The present study provides a theoretical reference for disaster warnings in hard sedimentary rock mass.

关键词： Hard siltstone Failure mechanism stratification effect infrared radiation characteristic Temporal-damage mechanism Dissimilation

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