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A Game-Theoretic Perspective on Resource Management for Large-Scale UAV Communication Networks

China Communications 2021年第1期18卷 70-87页

作者： Jiaxin chen Ping chen qihui Wu Yuhua Xu Nan qi Tao fang Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space Ministry of Industry and Information TechnologyCollege of Electronic and Information EngineeringNanjing University of Aeronautics and AstronauticsNanjing 211106China State Key Laboratory of Air Traffic Management System and Technology Nanjing 210014China th Research Institute of China Electronics Technology Group Corporation Nanjing 210007China College of Communications Engineering Army Engineering University of PLANanjing 210007China

As a result of rapid development in electronics and communication technology,large-scale unmanned aerial vehicles(UAVs)are harnessed for various promising applications in a coordinated *** it poses numerous advantages,resource management among various domains in large-scale UAV communication networks is the key challenge to be solved ***,due to the inherent requirements and future development trend,distributed resource management is *** this article,we investigate the resource management problem for large-scale UAV communication networks from game-theoretic perspective which are exactly coincident with the distributed and autonomous *** exploring the inherent features,the distinctive challenges are ***,we explore several gametheoretic models that not only combat the challenges but also have broad application *** provide the basics of each game-theoretic model and discuss the potential applications for resource management in large-scale UAV communication ***,mean-field game,graphical game,Stackelberg game,coalition game and potential game are *** that,we propose two innovative case studies to highlight the feasibility of such novel game-theoretic ***,we give some future research directions to shed light on future opportunities and applications.

关键词： large-scale UAV communication networks resource management game-theoretic model

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Exploring the effect of Arctic perennial sea ice on modulation of local air temperature

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Advances in Climate Change Research 2022年第4期13卷 473-488页

作者： Yu-fang YE Mohammed SHOKR Zhuo-qi chen Xiao chenG School of Geospatial Engineering and Science Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Science and Technology Branch Environment and Climate Change CanadaToronto M3H5T4Canada

Sea ice cover plays an important role in modulating local temperature through heat and moisture *** infuence of thin ice lead and polynya has been wellinvestigated,however,the effect of perennial ice(also called muliyear ice,MYI)has *** study is motivated by it and investigated a hypothesis that changes in MYI concentration in winter triggers changes in short-term local 2-m air *** hypothesis was tested using time series analysis of the two parameters and correlation between *** from the winters of 2004-2009 were used for the examination at three spatial *** hypothesis is found to be potentially accepted when MYI exists in a consolidated ice regime with negligible thin ice or open water in the surroundings,and the air temperature is low *** for the acceptance of the hypothesis were quantitatively *** qualifications entail that the ice cell must experience daily change of MYI concentration meanwhile satisfy the criteria of total ice concentration(TIC),young ice concentration(YIC)and air temperature(Tar)in the surrounding area,which are TIC>88.3%,YIC<9.5%and T_(air)<-19.0℃.Inverse relationships between changes in MYI concentration and the corresponding changes in air temperature were developed retroactively using data that satisfied the acceptance *** relationships varied with years,depending on ice conditions such as ice type distributions and snow *** study offers a first attempt to assess the effect of MYI on the same-day local surface air temperature using satelite observations,and provides evidence of this effect under quantitatively quanlifying conditions.

关键词： Arctic sea ice Multiyear ice Arctic response to climate change Microwave remote sensing

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inGAP-family:Accurate Detection of Meiotic Recombination Loci and Causal Mutations by Filtering Out Artificial Variants due to Genome Complexities

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Genomics, Proteomics & Bioinformatics 2022年第3期20卷 524-535页

作者： qichao Lian Yamao chen fang Chang Ying Fu Ji qi State Key Laboratory of Genetic Engineering Institute of Plant BiologySchool of Life SciencesFudan UniversityShanghai 200433China

Accurately identifying DNA polymorphisms can bridge the gap between phenotypes and genotypes and is essential for molecular marker assisted genetic *** complexities,including large-scale structural variations,bring great challenges to bioinformatic analysis for obtaining high-confidence genomic variants,as sequence differences between non-allelic loci of two or more genomes can be misinterpreted as *** is important to correctly filter out artificial variants to avoid false genotyping or estimation of allele ***,we present an efficient and effective framework,inGAP-family,to discover,filter,and visualize DNA polymorphisms and structural variants(SVs)from alignment of short *** this method to polymorphism detection on real datasets shows that elimination of artificial variants greatly facilitates the precise identification of meiotic recombination points as well as causal mutations in mutant genomes or quantitative trait *** addition,inGAP-family provides a user-friendly graphical interface for detecting polymorphisms and SVs,further evaluating predicted variants and identifying mutations related to *** is accessible at https://***/projects/ingap-family/.

关键词： inGAP-family Genomic variation Structural variation Meiotic analysis Genetic mapping Causal mutation

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Analysis of transient mold friction under different scales based on wavelet entropy theory

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Journal of Iron and Steel Research International 2019年第10期26卷 1061-1068页

作者： Yong Ma qi-qi Ding Kai chen Lan-jun Liu Bo-han fang Fei Liu School of Materials Science and Engineering Hefei University of TechnologyHefei 230009AnhuiChina

The mold friction(MDF)is an important parameter reflecting the lubrication between the mold and slab *** mold/slab friction was detected using an online monitoring system on a slab continuous caster equipped with hydraulic *** entropy theory was introduced to describe the fluctuation characteristics of the MDF signal in order to quantitatively estimate the mold/slab ***,MDF signal and its wavelet entropy were analyzed under typical casting conditions,such as normal casting,different models(to control the relationship among the amplitude,the frequency and the casting speed),changing casting speeds and *** results showed that the wavelet entropy could accurately reflect the overall changing trend of the mold friction as well as the local variation ***,the wavelet entropy of the hydraulic cylinder force and the MDF was compared and analyzed,and the relationship between them was further discussed.

关键词： Mold friction Wavelet entropy theory Time-frequency analysis Feature extraction Lubrication

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Novel,tadpole-shaped,polyhedral oligomeric silsesquioxane containing sulfonated block copolymer for humidity sensing

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Chinese Chemical Letters 2020年第8期31卷 2119-2124页

作者： fang chen Jiayu Yang Rong Cai Mengfei qi Xiaoyan Ma The Key Laboratory of Polymer Science and Technology of Shaanxi Province School of Chemistry and Chemical Engineering.Northwestern Polytechnical UniversityXi'an 710129China

Due to the"trade-off"effect between the high water adsorption and low stability under high Relative Humidity of polymer matrix,fabrication of resistive-type polymer-based humidity sensors with a wide impedance response and excellent stability in high relative humidity remains a great *** at solving that,a novel polymeric humidity sensing matrix,specifically a tadpole-shaped,polyhedral oligomeric silsesquioxane(POSS)containing block copolymers(BCPs)of POSS-poly(methyl methacrylate)-poly styrene(POSS-PMMA-SPS)were *** novel BCP was synthesized using atom transfer radical polymerization(ATRP)employing a two-step approach,and following post sulfonation,a series of sulfonated BCPs(POSS-PMMA-SPS)with different sulfonation degree was *** subject humidity sensors were produced using different sulfonated BCPs employing a dip-coating technique,and three wide-impedance response humidity sensors were *** of these sensors exhibited an excellent humidity-sensing response of mo re than 104 within the humidity range from 11%to 95%*** particular,the humidity sensor S-6 that had a proper degree of sulfonation presented a relatively fast response(t90%of 11 s and 80 s in both the water adsorption and desorption processes),and superior repeatability for more than 30 days.

关键词： POSS containing block copolymer Tadpole-shaped Humidity sensor Sulfonation degree Wide impedance response

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Selective hydrogenation of 4-nitrostyrene to 4-nitroethylbenzene catalyzed by Pd@Ru core–shell nanocubes

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Rare Metals 2022年第4期41卷 1189-1194页

作者： Jing-Jing fang qi-Ming Liu Xiong-Wu Kang Shao-Wei chen New Energy Technology Institute School of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Department of Chemistry and Biochemistry University of CaliforniaCA 95064USA

It is a challenge to selectively hydrogenate 4-nitrostyrene to 4-nitroethylbenzene,due to the similar energy barrier of hydrogenation of the nitro and vinyl ***,we demonstrate that such selective hydrogenation can be achieved by Pd@Ru core–shell nanocubes that are pre-pared by epitaxial growth of a face-centered cubic Ru shell on Pd *** core–shell structure of Pd@Ru nanocubes is conflrmed by transmission electron microscopy,X-ray diffraction spectroscopy,and elemental mapping *** is found that the electronic structure and hence the catalytic activity of the Pd@Ru nanocubes can be readily modulated by the Ru shell *** is manifested in electrochemical CO stripping measurements where a decrease of CO adsorption energy is observed on Pd@Ru nanocubes with the increase of the Ru shell *** from this study suggest that deliberate structural engineering can be exploited to prepare bimetallic core–shell nanostructures for highly active and selective hydrogenation of organic molecules with multi-functional moieties.

关键词： hydrogenation styrene benzene

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Application and progress of the detection technologies in hepatocellular carcinoma

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Genes & Diseases 2023年第5期10卷 1857-1869页

作者： qi Yan Yuan-song Sun Ran An fang Liu qi fang Zhen Wang Tao Xu Lijian chen Jian Du School of Basic Medical Sciences Anhui Medical UniversityHefeiAnhui 230032China Department of Emergency Surgery The Second Hospital of Anhui Medical UniversityHefeiAnhui 230032China Department of Anesthesiology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui 230032China Inflammation and Immune Mediated Diseases Laboratory of Anhui Province Anhui Institute of Innovative DrugsSchool of PharmacyHefeiAnhui 230032China Institute for Liver Diseases of Anhui Medical University Anhui Medical UniversityHefeiAnhui 230032China

Hepatocellular carcinoma(HCC)has a very high incidence and fatality rate,and in most cases,it is already at an advanced stage when ***,early prevention and detection of HCC are two of the most effective ***,the methods recommended in the practice guidelines for the detection of HCC cannot guarantee high sensitivity and specificity except for the liver biopsy,which is known as the“gold standard”.In this review,we divided the detection of HCC into pre-treatment diagnosis and post-treatment monitoring,and found that in addition to the traditional imaging detection and liver biopsy,alpha fetoprotein(AFP),lens culinaris-agglutinin-reactive fraction of AFP(AFP-L3),protein induced by vitamin K absence or antagonist-II(PIVKA-II)and other biomarkers are excellent biomarkers for HCC,especially when they are combined *** notably,the emerging liquid biopsy shows great promise in detecting *** addition,lactic dehydrogenase(LDH),suppressor of cytokine signaling(SOCS)and other relevant biomarkers may become promising biomarkers for HCC post-treatment *** the detailed introduction of the diagnostic technology of HCC,we can have a detailed understanding of its development process and then obtain some enlightenment from the diagnosis,to improve the diagnostic rate of HCC and reduce its mortality.

关键词： HCC Invasive diagnosis Minimally invasive diagnosis Noninvasive diagnosis Prognostic monitoring

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A novel method towards improving the hydrogen storage properties of hypoeutectic Mg-Ni alloy via ultrasonic treatment

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Journal of Magnesium and Alloys 2023年第3期11卷 903-915页

作者： Xin Ding Ruirun chen Xiaoyu chen Hongze fang qi Wang Yanqing Su Jingjie Guo National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001PR China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001PR China

Ultrasonic treatment has great contributions on modifying the morphology,dimension and distribution of constituent phases during solidification,which serve as dominate factors influencing the hydrogen storage performance of Mg-based *** this research,ultrasonic treatment is utilized as a novel method to enhance the de-/hydriding properties of Mg-2Ni(at.%)*** to ultrasonic treatment,the microstructure of as-cast alloy is significantly refined and *** to the increased eutectic boundaries and shortened distance insideα-Mg for hydrogen atoms diffusion,the hydrogen uptake capacities and isothermal de-/hydriding rates improve effectively,especially at lower *** peak desorption temperature reduces from 392.99°C to 345.56°C,and the dehydriding activation energy decreases from 101.93 k J mol^(-1)to 88.65 k J mol^(-1).Weakened hysteresis of plateau pressures and slightly optimized thermodynamics are determined from the pressure-composition *** to the refined primary Mg,a larger amount of hydrogen with the higher hydriding proportion is absorbed in the first stage when hydrides nucleate in eutectic region and grow on primary Mg periphery subsequently before MgH2colonies impinging,resulting in the enhancement of hydrogenation rates and capacities.

关键词： Hydrogen storage Mg-Ni alloy Ultrasonic treatment Dehydriding kinetics

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Fe_(n)Mo_(38-n)(n=0-38)及Fe_(n)Mo_(55-n)(n=0-55)双金属团簇的结构演化和基态能量

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原子与分子物理学报 2025年第3期42卷 85-93页

作者：郑琪琪陈轩程彪段海明新疆大学物理科学与技术学院乌鲁木齐830017

基于半经验的Gupta多体势,采用遗传算法及分子动力学淬火算法,系统研究了(FeMo)m(m=38及55)双金属团簇的基态结构及其能量.结果表明:对于Fe_(n)Mo_(38-n)(n=0-38)团簇,随Fe原子数的增加,Fe原子优先占据团簇表面再占据内部,其基态构型存... 详细信息

基于半经验的Gupta多体势,采用遗传算法及分子动力学淬火算法,系统研究了(FeMo)m(m=38及55)双金属团簇的基态结构及其能量.结果表明:对于Fe_(n)Mo_(38-n)(n=0-38)团簇,随Fe原子数的增加,Fe原子优先占据团簇表面再占据内部,其基态构型存在类O_(h)结构、类I_(h)结构和无序结构间的竞争.对于Fe_(n)Mo_(55-n)(n=0-55)团簇,随Fe原子数的增加,Fe原子优先占据团簇中心位置,再依次占据表面顶点、棱边和次外层,双金属团簇基态构型主要体现为在Mackay二十面体基础上的结构畸变.Fe_(24)Mo_(14),Fe_(13)Mo_(42)和Fe_(43)Mo_(12)为幻数结构团簇,研究发现双金属团簇幻数成因不能通过单质团簇常用的平均配位数和平均键长模型解释,它更多的归咎于组分效应导致的结构高对称性.

关键词：双金属团簇结构和能量淬火算法遗传算法

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Fe_(n)Co_(55-n)与Co_(n)Mo_(55-n)(n=0~55)团簇基态的能量与结构演化

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原子与分子物理学报 2025年第5期42卷 57-66页

作者：程彪郑琪琪陈轩段海明新疆大学物理科学与技术学院乌鲁木齐830049

采用半经验的Gupta多体势函数结合遗传算法及分子动力学淬火算法,系统研究了Co_(n)Mo_(55-n)(n=0~55)与Fe_(n)Co_(55-n)(n=0~55)团簇的基态结构与能量.通过分析基态结构的相似函数、质心间距、平均键长、平均原子配位数、平均结合能、... 详细信息

采用半经验的Gupta多体势函数结合遗传算法及分子动力学淬火算法,系统研究了Co_(n)Mo_(55-n)(n=0~55)与Fe_(n)Co_(55-n)(n=0~55)团簇的基态结构与能量.通过分析基态结构的相似函数、质心间距、平均键长、平均原子配位数、平均结合能、混合能与二阶差分能.探究了团簇基态的结构特征及稳定性与团簇所含元素种类及组分的关联.结果表明:对Co-Mo混合团簇,随Co原子数目增加,Co原子依次占据团簇中心与最外层顶点,混合团簇逐渐出现组分偏析与无序现象;对Fe-Co混合团簇,基态结构主体上均体现为围绕Mackay二十面体构型的结构畸变,随Fe原子含量增加,Fe原子先占据团簇外表面顶点位置直到全部包裹Co原子,逐渐形成核壳式结构;Co_(13)Mo_(42)与Fe_(42)Co_(13)是幻数结构团簇,研究发现组分效应导致的团簇高对称性相比团簇平均键长与平均原子配位数更能解释幻数结构的成因.

关键词：遗传算法淬火算法双金属团簇基态结构

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