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Multi-faceted spatio-temporal network for weather-aware air traffic flow prediction in multi-airport system

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Chinese Journal of Aeronautics 2024年第7期37卷 301-316页

作者： Kaiquan cai Shuo tang Shengsheng QIAN Zhiqi SHEN Yang YANG School of Electronic and Information Engineering Beihang UniversityBeijing 100191China State Key Laboratory of CNS/ATM Beijing100191China Institute of Automation Chinese Academy of SciencesBeijing 100190China Research Institute for Frontier Science Beihang UniversityBeijing 100191China

As one of the core modules for air traffic flow management,Air Traffic Flow Prediction(ATFP)in the Multi-Airport System(MAS)is a prerequisite for demand and capacity balance in the complex meteorological *** to the challenge of implicit interaction mechanism among traffic flow,airspace capacity and weather impact,the Weather-aware ATFP(Wa-ATFP)is still a nontrivial *** this paper,a novel Multi-faceted Spatio-Temporal Graph Convolutional Network(MSTGCN)is proposed to address the Wa-ATFP within the complex operations of ***,a spatio-temporal graph is constructed with three different nodes,including airport,route,and fix to describe the topology structure of ***,a weather-aware multi-faceted fusion module is proposed to integrate the feature of air traffic flow and the auxiliary features of capacity and weather,which can effectively address the complex impact of severe weather,e.g.,***,to capture the latent connections of nodes,an adaptive graph connection constructor is *** experimental results with the real-world operational dataset in Guangdong-hong Kong-Macao Greater Bay Area,China,validate that the proposed approach outperforms the state-of-the-art machine-learning and deep-learning based baseline approaches in performance.

关键词： Air traffic control Graph neural network Multi-faceted information Air traffic flow prediction Multi-airport system

Perspective on cycling stability of lithium-iron manganese phosphate for lithium-ion batteries

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Rare Metals 2023年第3期42卷 740-750页

作者： Kun Zhang Zi-Xuan Li Xiu Li Xi-Yong Chen hong-Qun tang Xin-Hua Liu cai-Yun Wang Jian-Min Ma Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China School of Transportation Science and Engineering Beihang UniversityBeijing 102206China Intelligent Polymer Research Institute AIIMInnovation CampusUniversity of WollongongNSW 2500Australia

Lithium-iron manganese phosphates(LiFex Mn_(1-x)PO_(4),0.1 详细信息

Lithium-iron manganese phosphates(LiFex Mn_(1-x)PO_(4),0.1

关键词： Lithium iron manganese phosphate Cathode Cycling stability Electrolyte modification Doping Coating Controlled synthesis

Study on Polyurethane/(vinyl ester resin) IPN Damping Materials

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Journal of Materials Science & Technology 2003年第z1期19卷 56-58页

作者： Chuanli QIN Dongyan tang Jun cai Jusheng.ZHANG Weimin cai Xiaodong SUN Department of Environmental Science and Engineering Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Environmental Science and Engineering Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Environmental Science and Engineering Harbin Institute of Technology Harbin 150001 China Department of Environmental Science and Engineering Shanghai Jiaotong University Shanghai 200030 China The Army Representative Agency in 674 Factory State-Owned Harbin 151005 China

Polyurethane/(vinyl ester resin) interpenetrating polymer network (PU/VER IPN) materials with broad temperatureranges and excellent damping properties from Iow temperature to room temperature were prepared. The influenceof comonomers and component ratios on the compatibility and damping properties of IPN materials was studied byDMA which indicates that such properties are improved by introducing acrylic esters instead of polystyrene (PSt)into VER comonomer system. The detected results of microstructure by AFM show that the phase ranges of thedual-phase continuous IPN materials obtained are both in nanometer scale. The results of mechanical propertiesshow that IPN materials show the regulation from elastic deformation to brittle deformation with the increase of VERproportion.

关键词： Interpenetrating polymer network, Vinyl ester resin, Damping materials, Compatibility

Highly Sensitive Spectrofluorimetric Determination of Trace Amounts of Indium(Ⅲ) with Salicylaldehyde Salicyloylhydrazone

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Chemical Research in Chinese Universities 2002年第2期18卷 183-188页

作者： HAN Fang WANG hong jian tang Bo Department of Chemistry Shandong Normal UniversityJinan 250014P.R.China

The fluorescent reaction of salicylaldehyde salicyloylhydrazone(SASH) with indium(Ⅲ) was studied in detail. Based on this chelation reaction, a sensitive spectrofluorimetric method was developed for the determination of indium in a water ethanol(volume ratio 3∶7) medium at pH 4 0. Under the condition, the In SASH complex displays an excitation and emission maxima at 396 and 461 nm, respectively. The linear range of the method is from 4 7 to 1000 ng/mL and the detection limit is 0 94 ng/mL. The molar ratio of indium to the reagent is 1∶1. The interferences of other ions were studied. The method was successfully applied to the determination of indium in the chemical reagents of lead, tin, zinc, zinc chloride and geological samples by standard addition method.

关键词： Indium determination Salicylaldehyde salicyloylhydrazone Spectrofluorimetry

Genetic Diversity and Structure of New Inbred Rice Cultivars in China

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Journal of Integrative Agriculture 2012年第10期11卷 1567-1573页

作者： XU Qun CHEN hong WANG cai-hong YU Han-yong YUAN Xiao-ping WANG Yi-ping FENG Yue tang Sheng-xiang WEI Xing-hua State Key Laboratory of Rice Biology China National Rice Research Institute Development Center for Science and Technology Ministry of Agriculture

A total of 408 inbred rice cultivars bred in the last decade were analyzed for 24 SSR markers. The results showed the genetic diversity of indica cultivars was higher than that of japonica cultivars, and the genetic diversity of new cultivars raised in recent years was lower. Among the six rice cropping regions （RCRs） in China, genetic diversity was the highest in the central rice region （RCR-II） and the southwest rice region （RCR-III）. Genetic differences among subpopulations of japonica were more complex than those in indica. Differentiation among seasonal ecotypes and RCRs in indica populations was unclear, but differentiation between RCR-II and northeast rice region （RCR-V） was more distinct for japonica cultivars. Considering the North rice region （RCR-IV） has very low genetic diversity among the tested cultivars, it is important to broaden the genetic background for future cultivars in rice breeding programs.

关键词： rice Oryza sativa cultivars genetic diversity

Converting“cold”to“hot”:epigenetics strategies to improve immune therapy effect by regulating tumor-associated immune suppressive cells

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Cancer Communications 2024年第6期44卷 601-636页

作者： Yijia tang Guangzu Cui Haicong Liu Ying Han Changjing cai Ziyang Feng hong Shen Shan Zeng Department of Oncology Xiangya HospitalCentral South UniversityChangshaHunanP.R.China National Clinical Resaerch Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunanChina

Significant developments in cancer treatment have been made since the advent of immune ***,there are still some patientswithmalignant tumors who do not benefit from *** without immunogenicity are called“cold”tumors which are unresponsive to immunotherapy,and the opposite are“hot”*** suppressive cells(ISCs)refer to cells which can inhibit the immune response such as tumor-associated macrophages(TAMs),myeloid-derived suppressor cells(MDSCs),regulatory T(Treg)cells and so *** more ISCs infiltrated,the weaker the immunogenicity of the tumor,showing the characteristics of“cold”*** dysfunction of ISCs in the tumor microenvironment(TME)may play essential roles in insensitive therapeutic *** studies have found that epigeneticmechanisms play an important role in the regulation of *** ISCs may be a new approach to transforming“cold”tumors into“hot”***,we focused on the function of ISCs in the TME and discussed how epigenetics is involved in regulating *** addition,we summarized the mechanisms by which the epigenetic drugs convert immunotherapy-insensitive tumors into immunotherapy-sensitive tumors which would be an innovative tendency for future immunotherapy in“cold”tumor.

关键词： DNA methylation epigenetics strategy histone modification immune suppressive cell noncoding RNA

An Optimal Stability Matching Algorithm for DAG Blockchain Based on Matching Theory

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Chinese Journal of Electronics 2021年第2期30卷 367-377页

作者： XIA Xu HUANG Jianhua ZHENG hong tang Ruicong East China University of Science and Technology

IOTA is a typical blockchain designed for IoT applications. The Markov chain monte carlo algorithm(MCMC) used in IOTA may lead to a large number of unverified blocks, which increases transaction delay to a certain extent. We propose a Stable matching algorithm(SMA) based on matching theory to stimulate nodes to verify blocks, thereby reducing the number of unverified blocks and the consensus delay. The structure of our Io T blockchain uses the Directed acyc1 ic graph(DAG)to improve the transaction processing capability. The nodes in the network are abstracted as transaction issuers and transaction verifiers. A verification service scheduling system is used to assign transactions to the verifiers and achieve the optimal matching. We designed a trust evaluation mechanism which offers verifiers references and awards to check transactions. The simulation results show that SMA can significantly reduce the number of orphan blocks and improve the transaction throughput, which helps to improve the reliability of the Io T blockchain.

关键词： stable matching algorithm directed acyclic graph verification service scheduling system blockchains SMA Markov processes transaction throughput IoT applications transaction verifiers transaction processing consensus delay Markov chain Monte Carlo algorithm Monte Carlo methods DAG blockchain optimal stability matching algorithm Internet of Things directed graphs scheduling computer network security transaction processing capability transaction issuers IoT blockchain IOTA orphan blocks

EFFECTIVE WIDTH AND DISTRIBUTION COEFFICIENTS OF MOMENT IN RC CONTINUOUS SLABS

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China Ocean Engineering 1990年第3期5卷 345-358页

作者： tang, Taiping hong, Xiaolin Nanjing Hydraulic Research Inst Nanjing China

Using effective width of load and distribution coefficient of moment is a kind of simplified method in the design of continuous reinforced concrete slabs, which is widely used in engineering design. In this paper, through the analysis of load-bearing states of continuous slabs restricted by the main beams under concentrated loads, the effective width of load and distribution coefficients of moment of a continuous slab are obtained with the principle of equivalent loads. On the basis of the data of a 5-span continuous reinforced concrete slab, the formula of effective width is deduced and the distribution coefficients of moment for the mid-span and supports are given.

关键词： Beams and Girders Stresses Strain Gages Measurements

Catalyst Control of Interfacial Welding Mechanical Properties of Vitrimers

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Chinese Journal of Polymer Science 2022年第6期40卷 611-617页

作者： Zong-tang Lv hong-Kun Yang Dong Wang State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

Interfacial welding of thermosetting polymers has been a challenge,but vitrimers with dynamic covalent networks open numerous opportunities for welding and adhesion of these *** this work,we performed interfacial welding between epoxy-based vitrimers and an epoxy vitrimer and a thermoplastic polyurethane(TPU).Catalyst-controlled interfacial mechanical properties for both the vitrimer/vitrimer and vitrimer/TPU are observed,that is,the more efficient the catalyst for the transesterification reactions,the larger the interfacial fracture energy is,and the better the welding strength will *** interfacial mechanical properties are also found to be independent of the original mechanical properties of the *** for a vitrimer with poor mechanical properties,both the welded vitrimer/vitrimer and vitrimer/TPU exhibit larger interfacial fracture energy than the one with better mechanical properties as long as the former uses more efficient catalyst.

关键词： Vitrimers Interfacial welding Epoxy Catalyst Thermoplastic polyurethane