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Comprehensive Evaluation Method for Traffic Flow Data Quality ba.ed on Grey Correlation Analysis and Particle Swarm Optimization

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Journal of Systems Science and Systems Engineering 2024年第1期33卷 106-128页

作者： Wei ba.ba.jun chen Qi Li School of Automation and Electrical Engineering Dalian Jiaotong UniversityDalian116028China Faculty of Electronic Information and Electrical Engineering Dalian University of TechnologyDalian116023China

Nowadays,data are more and more used for intelligent modeling and prediction,and the comprehensive evaluation of data quality is getting more and more attention as a necessary means to measure whether the data are usable or ***,the comprehensive evaluation method of data quality mostly contains the subjective factors of the evaluator,so how to comprehensively and objectively evaluate the data has become a bottleneck that needs to be solved in the research of comprehensive evaluation *** order to evaluate the data more comprehensively,objectively and differentially,a novel comprehensive evaluation method ba.ed on particle swarm optimization(PSO)and grey correlation analysis(GCA)is presented in this *** first,an improved GCA evaluation model ba.ed on the technique for order preference by similarity to an ideal solution(TOPSIS)is ***,an objective function model of maximum difference of the comprehensive evaluation values is built,and the PSO algorithm is used to optimize the weights of the improved GCA evaluation model ba.ed on the objective function ***,the performance of the proposed method is investigated through parameter analysis.A performance comparison of traffic flow data is carried out,and the simulation results show that the maximum average difference between the evaluation results and its mean value(MDR)of the proposed comprehensive evaluation method is 33.24%higher than that of TOPSIS-GCA,and 6.86%higher than that of *** proposed method has better differentiation than other methods,which means that it objectively and comprehensively evaluates the data from both the relevance and differentiation of the data,and the results more effectively reflect the differences in data quality,which will provide more effective data support for intelligent modeling,prediction and other applications.

关键词： Data quality comprehensive evaluation particle swarm optimization grey correlation analysis traffic flow data

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Aggregation of CeAlO_(3) inclusions in heavy ingot of a steel containing 0.007% aluminum

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Journal of Iron and Steel Research International 2024年第8期31卷 1960-1972页

作者： Qiu-yue Zhou Jun-tao ba.Lun Zhang Wei chen Ying Ren Li-feng Zhang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004HebeiChina School of Mechanical and Materials Engineering North China University of TechnologyBeijing 100144China

The distribution of inclusions at the bottom of a Ce-treated heavy steel ingot was detected and *** three-dimensional morphology and spatial distribution of CeAlOs clusters were characterized using the electrolytic extraction and Micro-CT detection.A model of inclusion collision to predict the aggregation of CeAlO_(3) inclusions in the ingot was established and validated by measured *** were mainly CeAlO_(3) and a small amount of Ce_(2)O_(2)S in the tundish after cerium *** collision and aggregation of inclusions led to the formation of large clusters in the ingot during the solidification *** slag entrainment inclusions,large CeAO_(3) clusters and small CeAlO_(3) particles were observed from the center to the edge of the ingot *** inclusions were mainly concentrated at the *** number density of inclusions larger than 200μm was 0.21 mm^(-3).The maximum diameter of CeA1O_(3) clusters was 1340μ*** the edge to the radial center and from the bottom to the top,the average diameter of inclusions gradually increased due to the longer solidification time of the ingot.

关键词： Inclusion Heavy ingot Cerium treatment Collision

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The Role of Renewable Protocatechol Acid in Epoxy Coating Modification: Significantly Improved Antiba.terial and Adhesive Properties

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Chinese Journal of Polymer Science 2024年第1期42卷 63-72,I0008页

作者： Ming-Xuan chen Jin-Yue Dai Li-Yue Zhang Shuai-Peng Wang Jing-Kai Liu Yong-Gang Wu Xin-Wu ba.Xiao-Qing Liu School of Chemistry and Materials Science Hebei UniversityBaoding 071000China Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China Key Laboratory of Marine Materials and Related Technologies Chinese Academy of SciencesNingbo 315201China

It is of great significance to design epoxy coatings with superior antiba.terial properties and high adhesive properties, as well as excellent processing, superior durability, and high transparency. However, it is still a challenge because of the common complex design and synthesis. Herein, the bio-ba.ed monomer protocatechuic acid(PCA) was used as raw material, the catechol structure with high bonding and antiba.terial properties was introduced into the flexible alkane segment of ethylene glycol diglycidyl ether(EGDE) through an efficient, and green method, and it was cured with isophorone diamine(IPDA) to prepare corresponding thermosets. The cured resins exhibited excellent allaround qualities, particularly in bonding and antiba.terial. When 30% PCA was added to pure epoxy resin, the adhesion between substrate and coating increased from 4.40 MPa to 13.60 MPa and the antiba.terial rate of coating against E. coli and S. aureus could approach 100%. All of this is due to the fact that the catechol structure present in PCA has the ability to interact with various substrates and alter the permeability of ba.terial cell membranes. The architecture of this method offers a fresh approach to dealing with the issues of challenging raw material selection and complex synthesis techniques.

关键词： Epoxy coatings Thermosets Catechol structure Antiba.terial High adhesion

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Synaptotagmins family affect glucose transport in retinal pigment epithelial cells through their ubiquitination-mediated degradation and glucose transporter-1 regulation

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World Journal of Diabetes 2024年第5期15卷 958-976页

作者： Hong Xu Li-Bo Zhang Yi-Yi Luo Ling Wang Ye-Pin Zhang Pei-Qi chen Xue-Ying ba.Jian Han Heng Luo Department of Ophthalmology The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina Precision Medicine Center of Chuxiong Yi Autonomous Prefecture The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina Department of Endocrinology The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina Department of Pathology The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina

ba.KGROUND Synaptotagmins(SYTs)are a family of 17 membrane transporters that function as calcium ion sensors during the release of Ca2+-dependent neurotransmitters and ***,few studies have reported whether members of the SYT family play a role in glucose uptake in diabetic retinopathy(DR)through Ca2+/glucose transporter-1(GLUT1)and the possible regulatory mechanism of *** To elucidate the role of the SYT family in the regulation of glucose transport in retinal pigment epithelial cells and explore its potential as a therapeutic target for the clinical management of *** DR was induced by streptozotocin in C57BL/6J mice and by high glucose medium in human retinal pigment epithelial cells(ARPE-19).Bioinformatics analysis,reverse transcriptase-polymerase chain reaction,Western blot,flow cytometry,ELISA,HE staining,and TUNEL staining were used for *** Six differentially expressed proteins(SYT2,SYT3,SYT4,SYT7,SYT11,and SYT13)were found between the DR and control groups,and SYT4 was highly *** induces SYT4 overexpression,manipulates Ca2+influx to induce GLUT1 fusion with the plasma membrane,promotes abnormal expression of the glucose transporter GLUT1 and excessive glucose uptake,induces ARPE-19 cell apoptosis,and promotes DR *** deficiency inhibits the proteasomal degradation of SYT4 in DR,resulting in SYT4 accumulation and enhanced GLUT1 fusion with the plasma membrane,and these effects were blocked by oe-Parkin ***,dysregulation of the myelin transcription factor 1(Myt1)-induced transcription of SYT4 in DR further activated the SYT4-mediated stimulus-secretion coupling process,and this process was inhibited in the oe-MYT1-treated *** Our study reveals the key role of SYT4 in regulating glucose transport in retinal pigment epithelial cells during the pathogenesis of DR and the underlying mechanism and suggests potential therapeutic targets for clinical DR.

关键词： Diabetic retinopathy Glucose transporter-1 Synaptotagmin 4 Parkin Myelin transcription factor 1

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Sources appointment and health risks of PM_(2.5)-bound trace elements in a coastal city of southeastern China

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Journal of Environmental Sciences 2024年第4期138卷 561-571页

作者： Ziyi Lin Xiaolong Fan Gaojie chen Youwei Hong Mengren Li Lingling Xu ba.ye Hu chen Yang Yanting chen Zhiqian Shao Jinsheng chen Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Lab of Urba. Environment and Health Institute of Urban EnvironmentChinese Academy ofSciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Minnan Normal University Zhangzhou 363000China

To gain a comprehensive understanding of sources and health risks of trace elements in an area of China with high population densities and low PM_(2.5)concentrations,15 trace elements(Al,K,Ca,Ti,V,Cr,Mn,Fe,Ni,Cu,Zn,As,Sn,ba.Pb)in PM_(2.5)were monitored from December 2020 to November 2021 in a representative city,*** concentrations of trace elements in Xiamen displayed an obvious seasonal variation and were dominated by K,Fe,Al,Ca and *** on Positive Matrix Factorization analysis,source appointment revealed that the major sources of trace elements in Xiamen were traffic,dust,biomass and firework combustion,industrial manufacture and shipping *** to health risk assessment combined with the source appointment results,it indicated that the average noncarcinogenic risk was below the threshold and cancer risk of four hazardous metals(Cr,Ni,As,Pb)exceeded the threshold(10^(-6)).Traffic-related source had almost half amount of contribution to the health risk induced by PM_(2.5)-bound trace *** the dust transport period or Spring Festival period,the health risks exceeded an acceptable threshold even an order of magnitude higher,suggesting that the serious health risks still existed in low PM_(2.5)environment at certain *** risk assessment reminded that the health risk reduction in PM_(2.5)at southeastern China should prioritize traffic-related hazardous trace elements and highlighted the importance of controlling vehicles emissions in the future.

关键词： PM_(2.5)-bound trace elements Seasonal variations Source appointment Health risks Traffic-related source

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基于地缘环境视角的地缘破碎带历史演进解析——以南高加索地区为例

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地理学报 2024年第6期79卷 1592-1611页

作者：巴士奇陈瑛姚宇阳李淦叶帅陕西师范大学地理科学与旅游学院西安710119 江苏理工学院文化与旅游学院常州213001

地缘破碎带是全球冲突和大国竞争的主要区域,具备外部挤压性、内部分裂性、过程动态性等基本特征,是域内外双重尺度作用下共同形成的地理区域。地缘破碎带的基本特征与发展模式契合于地缘环境研究的核心理念,在地缘环境视角下,地缘破碎... 详细信息

地缘破碎带是全球冲突和大国竞争的主要区域,具备外部挤压性、内部分裂性、过程动态性等基本特征,是域内外双重尺度作用下共同形成的地理区域。地缘破碎带的基本特征与发展模式契合于地缘环境研究的核心理念,在地缘环境视角下,地缘破碎带是一个以域内外多元行为体互动实践为核心的不断发展演化的地理区域。通过互动实践,破碎带产生的决策信息集成为制约相关行为体发生行动的物质性与理念性因素,在此约束下,这些决策行动在时序上的排列关联构成了破碎带历史演进的核心内容。选取亚欧交界处的南高加索地区为研究区域,自1991年南高加索三国独立以来,该地区历经复杂的内部冲突与外部博弈,是地缘破碎带分析的典型案例。本文构建出地缘环境视角下地缘破碎带历史演进的分析框架,从本底要素、关联要素、结构要素3类视角解析1991年南高加索地区三国独立后至2020年底的历史演进过程及阶段性特征,并从跨领域互动、跨尺度耦合和多元行为体博弈3方面分析推动演进的内在路径,以地缘政治学理论视角多维化呈现地缘破碎带的历史演进过程,尝试将地理学研究的区域性、综合性、尺度性等基本思维模式融入历史学与国际关系学研究中。

关键词：地缘破碎带地缘环境多元行为体历史演进南高加索地区

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Multiscale Study on Low Temperature Crack Resistance Mechanism of Steel Slag Asphalt Mixture

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 705-715页

作者：白雪峰王岚 chen Xiunan School of Science Inner Mongolia University of TechnologyHohhot 010051China School of Civil Engineering Key Laboratory of Civil Engineering Structure and MechanicsInner Mongolia University of TechnologyHohhot 010051China Inner Mongolia Traffic De-sign Institute Co.LTD Hohhot 010050China

The objective of this paper was to study low temperature crack resistance mechanism of steel slag asphalt mixture(SAM).Thermal stress restrained specimen test(TSRST)and three-point bending test were carried out to evaluate the low-temperature crack resistance of SAM and ba.alt asphalt mixture(ba.).ba.ed on the digital image correlation technique(DIC),the strain field distribution and crack propagation of SAM were analyzed from the microscopic point of view,and a new index,crack length factor(C),was proposed to evaluate the crack resistance of the asphalt *** crystal phase composition and microstructure of steel slag aggregate(SA)and ba.alt aggregate(ba.were studied by X-ray diffraction(XRD)and scanning electron microscopy(SEM)to explore the low-temperature crack resistance mechanism of *** show that the low-temperature crack resistance of SAM is better than that of ba.;SAM has good integrity and persistent elastic deformation,and its bending failure mode is a hysteretic quasi-brittle failure;The SA surface is evenly distributed with pores and has surface *** has the composition phase of alkaline aggregate-calcite(CaCO3),so it has good adhesion to asphalt,which reveals the mechanism of excellent low-temperature crack resistance of SAM.

关键词： steel slag asphalt mixture ·low-temperature crack resistance ·strain energy density ·XRD SEM

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Preparation and Photostriction Properties of BiFeO_(3)-ba.iO_(3)Ceramics

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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1079-1086页

作者： ZHENG Zewei ZHANG Liqiang chen chen CAO Minghe YI Zhiguo LIU Hanxing School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China School of Microelectronics Shanghai UniversityShanghai 200444China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

Under illumination by 405,520 and 655 nm monochromatic visible light(light intensity of 30 kW/m^(2)),large photostriction(ΔL/L)of 0.19%,0.13%and 0.26%for 67BiFeO_(3)-33ba.iO_(3)(67BF-33BT)lead-free ferroelectric ceramics are obtained,*** studying the ferroelectric and photoelectric properties in conjunction with in situ Raman spectroscopy,it is found that the photostrictive effect of 67BF-33BT is not caused by the electrical strain induced by abnormal photovoltaic voltage,but related to the optical induced oxygen octahedral *** 67BF-33BT lead-free ferroelectric material with excellent photostrictive response in the visible light region is expected to play an important role in the field of optical drive electromechanical devices.

关键词： ferroelectric ceramics photostrictive effect visible light response

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轴流压气机叶片与机匣处理一体化优化设计

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航空动力学报 2024年第7期39卷 205-216页

作者：范忠岗巴顿邱佳慧杨晨杜娟中国科学院工程热物理研究所先进燃气轮机实验室北京100190 中国科学院先进能源动力重点实验室北京100190 中国科学院轻型动力创新研究院北京100190 中国科学院大学航空宇航学院北京100049

针对一台低速轴流压气机搭建了叶片与机匣处理一体化优化设计平台,基于自由变形技术关联设计参数与工程参数,实现多目标优化.综合考虑效率和裕度指标,在峰值效率不降的情况下获得了7.21%的裕度拓宽量.针对最优方案,分析了叶顶堵塞及损... 详细信息

针对一台低速轴流压气机搭建了叶片与机匣处理一体化优化设计平台,基于自由变形技术关联设计参数与工程参数,实现多目标优化.综合考虑效率和裕度指标,在峰值效率不降的情况下获得了7.21%的裕度拓宽量.针对最优方案,分析了叶顶堵塞及损失分布,探讨了叶片与机匣处理一体化优化设计的扩稳机理.研究发现:叶片弯掠和机匣处理组合作用下,最大堵塞位置由24.7%叶顶轴向弦长后移至33.6%叶顶轴向弦长,最大损失位置由21.4%叶顶轴向弦长后移至30.6%叶顶轴向弦长,叶顶泄漏涡的抑制和低能堵塞区的消除是一体化优化设计扩稳的主要原因.

关键词：轴流压气机自由变形技术一体化优化设计裕度拓宽堵塞熵产率

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新时代国家粮食安全的理论构建与治理进路

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中国农村经济 2024年第2期 2-19页

作者：钟钰巴雪真陈萌山中国农业科学院农业经济与发展研究所中国农业科学院

党的十八大以来,习近平关于粮食安全的重要论述,系统阐述和回应了新时代粮食安全的重大理论与实践问题。本文在阐释新时代粮食安全总目标、总要求、总任务、总方针、总路径的基础上,揭示其蕴含的理论逻辑、历史逻辑和实践逻辑。沿着“产... 详细信息

党的十八大以来,习近平关于粮食安全的重要论述,系统阐述和回应了新时代粮食安全的重大理论与实践问题。本文在阐释新时代粮食安全总目标、总要求、总任务、总方针、总路径的基础上,揭示其蕴含的理论逻辑、历史逻辑和实践逻辑。沿着“产品-商品-特殊商品”的理论逻辑,明晰粮食的属性和战略价值;回顾“地方分化-资源匹配-治理转变”的历史逻辑,厘清粮食安全政策体系建立轨迹;围绕“工业化技术化之路、要素集聚之路、县域之路、产业之路、保障之路”的实践逻辑,明确维护粮食安全的发展路径。走好中国特色粮食安全治理之路,应坚持主体论、“两藏”论和自主论,从充分调动地方抓粮和农民种粮“两个积极性”、深入实施“两藏”战略、统筹利用国内国际“两种资源”方面发力。

关键词：粮食安全粮食安全理论粮食安全治理

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