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Seasonal Characteristics of Forecasting Uncertainties in Surface PM_(2.5)Concentration Associated with Forecast Lead Time over the Beijing-Tianjin-Hebei Region

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Advances in Atmospheric Sciences 2024年第5期41卷 801-816页

作者： Qiuyan DU Chun ZHAO Jiawang FENG Zining YANG Jiamin xu Jun GU Mingshuai ZHANG mingyue xu Shengfu LIN Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026China

Forecasting uncertainties among meteorological fields have long been recognized as the main limitation on the accuracy and predictability of air quality ***,the particular impact of meteorological forecasting uncertainties on air quality forecasts specific to different seasons is still not well *** this study,a series of forecasts with different forecast lead times for January,April,July,and October of 2018 are conducted over the Beijing-Tianjin-Hebei(BTH)region and the impacts of meteorological forecasting uncertainties on surface PM_(2.5)concentration forecasts with each lead time are *** increased lead time,the forecasted PM_(2.5)concentrations significantly change and demonstrate obvious seasonal *** general,the forecasting uncertainties in monthly mean surface PM_(2.5)concentrations in the BTH region due to lead time are the largest(80%)in spring,followed by autumn(~50%),summer(~40%),and winter(20%).In winter,the forecasting uncertainties in total surface PM_(2.5)mass due to lead time are mainly due to the uncertainties in PBL heights and hence the PBL mixing of anthropogenic primary *** spring,the forecasting uncertainties are mainly from the impacts of lead time on lower-tropospheric northwesterly winds,thereby further enhancing the condensation production of anthropogenic secondary particles by the long-range transport of natural *** summer,the forecasting uncertainties result mainly from the decrease in dry and wet deposition rates,which are associated with the reduction of near-surface wind speed and precipitation *** autumn,the forecasting uncertainties arise mainly from the change in the transport of remote natural dust and anthropogenic particles,which is associated with changes in the large-scale circulation.

关键词： PM_(2.5) forecasting uncertainties forecast lead time meteorological fields Beijing-Tianjin-Hebei region

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人工智能场景下的“透明”概念研究:基于国际标准术语定义的内容分析

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信息资源管理学报 2024年第3期14卷 42-55页

作者：安小米徐明月中国人民大学信息资源管理学院北京100872 中国人民大学数据工程与知识工程教育部实验室北京100872 中国人民大学智慧城市研究中心北京100872 北京电子科技学院图书馆(档案馆) 北京100070

为厘清人工智能场景下“透明”概念的内涵与外延,构建人工智能领域对“透明”概念的共识,本文对ISO、IEC和ITU-T三大国际标准化组织发布的标准文件中11个关于透明的定义进行了分析解构,识别出了定义中的核心概念、对象、特征及领域。结... 详细信息

为厘清人工智能场景下“透明”概念的内涵与外延,构建人工智能领域对“透明”概念的共识,本文对ISO、IEC和ITU-T三大国际标准化组织发布的标准文件中11个关于透明的定义进行了分析解构,识别出了定义中的核心概念、对象、特征及领域。结合人工智能的相关国际标准,识别出了人工智能场景下“透明”定义中的核心概念及其关系,构建了基于国际标准的人工智能场景下的“透明”概念体系,并从对象、利益相关者、特征三个维度提出了对人工智能信息治理的启示。本文从透明视角提出的对人工智能场景下信息治理和信息技术治理标准化协同的新思路,具有一定理论价值和现实意义。

关键词：人工智能透明核心概念信息治理技术治理标准化协同

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拟合楼层反应谱的三向地震动时程生成方法研究

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应用力学学报 2024年第2期41卷 422-431页

作者：杨兰兰陈杰徐明悦付晨吉锋江南大学环境与土木工程学院无锡214122 中国地震局工程力学研究所地震工程与工程振动重点实验室哈尔滨150086 成都理工大学地质灾害防治与地质环境保护国家重点实验室成都610059

为获得满足规范要求的拟合楼层反应谱的三向地震动时程,采用六阶常微分方程的本征函数为基函数,分解并重构天然地震动时程;通过构建影响矩阵,迭代计算逐步调整本征函数的幅值系数,最终实现预设拟合精度;引入正交化方法保证三向地震动时... 详细信息

为获得满足规范要求的拟合楼层反应谱的三向地震动时程,采用六阶常微分方程的本征函数为基函数,分解并重构天然地震动时程;通过构建影响矩阵,迭代计算逐步调整本征函数的幅值系数,最终实现预设拟合精度;引入正交化方法保证三向地震动时程两两之间的统计独立性,并通过两组算例提供验证。研究结果表明,迭代所得时程反应谱与目标楼层反应谱的拟合精度较高,迭代过程中时程反应谱均匀一致地向目标谱逼近,迭代过程收敛,所得三向地震动时程均无零飘现象,满足规范要求。

关键词：抗震设计与分析楼层反应谱地震动时程拟合互相关系数本征函数

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数智治理概念体系构建:要素、特征及关系

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中国科技术语 2024年第3期26卷 47-56页

作者：徐明月安小米北京电子科技学院图书馆(档案馆) 北京100070 中国人民大学信息资源管理学院北京100872 中国人民大学数据工程与知识工程教育部实验室北京100872 中国人民大学智慧城市研究中心北京100872

为厘清数智治理这一术语的核心概念及关系,文章对文献中10个“数智治理”的代表性定义进行解构和分析,构建了数智治理的概念体系。基于构建的数智治理概念体系,从概念要素、内涵特征及关系等方面对数智治理进行了阐释,并以社会技术系统... 详细信息

为厘清数智治理这一术语的核心概念及关系,文章对文献中10个“数智治理”的代表性定义进行解构和分析,构建了数智治理的概念体系。基于构建的数智治理概念体系,从概念要素、内涵特征及关系等方面对数智治理进行了阐释,并以社会技术系统理论为分析框架,从社会、技术以及社会与技术的交互视角对数智治理概念的特征进行了分析。通过构建数智治理概念体系,凝聚数智治理共识,为数智治理体系建设提供参考。

关键词：数智治理核心概念概念体系数据治理数字治理智慧治理

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Acute carbon monoxide poisoning in Shandong, China: an observational study

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Chinese Medical Journal 2022年第13期135卷 1539-1544页

作者： Lina Zhang Di Wu mingyue xu Yonghui Bian Youcun Wang Guangkai Gao Qing Sun Department of Special Medicine School of Basic MedicineQingdao UniversityQingdaoShandong 266071China Department of Military and Special Medicine No.971 Hospital of the People's Liberation Army NavyQingdaoShandong 266071China dministration Ofice Hyperbarc Oxygen Medicine Branch of Shandong Medical AssociationQingdaoShandong 266071China Department of Hyperbaric Medicine No.960 Hospital of the People's Liberation Army NayJinanShandong 250031China.

Background: Carbon monoxide (CO) poisoning remains a major cause of accidental injuries and multiple studies have indicated that CO is also associated with significantly severe or long-term toxicity to the central nervous system. Given that CO poisoning causes serious morbidity and mortality, a better understanding of epidemiological features and clinical characteristics of acute CO poisoning in China is ***: We collected the clinical data of acute CO poisoning in patients between November 2019 and April 2020 across Shandong province, China and analyzed its characteristics focusing on the weekly amount and the severity of the confirmed ***: A total number of 21,088 acute CO poisoning cases were diagnosed. The overall incidence of acute CO poisoning was approximately 0.021%. On severity rankings, 63% of confirmed cases (n=13,378) were mild, 27%(n=5635) were moderate, and 10% (n=2075) were severe. Interestingly, the coastal cities had more confirmed cases than the inland/suburban areas in Shandong. Meanwhile, the number of confirmed cases was negatively correlated with the local mean daily temperature (P=0.0167).Conclusions: Mild acute CO poisoning cases accounted for the majority of all confirmed cases during the winter of 2019. In Shandong province, which is located in east China, residents of the coastal cities are more susceptible to CO poisoning than residents of inland cities.

关键词： Epidemiology Acute carbon monoxide poisoning Public health Delayed neurological sequelae Hyperbaric oxygen therapy

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动力取向干预联合量化运动指导在老年尿毒症维持性血液透析患者中的应用

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齐鲁护理杂志 2024年第5期30卷 30-34页

作者：蒋广慧许明月代雯莉高菊徐州医科大学附属医院江苏徐州221006

目的:探讨动力取向干预联合量化运动指导老在年尿毒症维持性血液透析患者中的应用效果。方法:选取2018年4月1日~2022年4月30日收治的行维持性血液透析治疗的80例老年尿毒症患者,采取随机数字表法分为对照组和研究组各40例,对照组采用常... 详细信息

目的:探讨动力取向干预联合量化运动指导老在年尿毒症维持性血液透析患者中的应用效果。方法:选取2018年4月1日~2022年4月30日收治的行维持性血液透析治疗的80例老年尿毒症患者,采取随机数字表法分为对照组和研究组各40例,对照组采用常规护理干预,研究组实施动力取向干预联合量化运动指导;比较两组干预前后睡眠质量[采用匹兹堡睡眠质量指数量表(PSQI)]、疲劳程度[采用慢性病治疗功能评估-疲劳量表(FACIT-F)]、运动量、心理韧性[采用心理韧性量表(CD-RISC)]、依从性[采用肾脏病饮食依从行为量表(RABQ)、Morisky用药依从性量表(MMAS-8)、运动依从性分级]、生活质量(采用健康状况调查问卷)。结果:干预后,两组PSQI、FACIT-F、运动量评分均优于干预前(P<0.05),且研究组优于对照组(P<0.01);干预后,两组CD-RISC评分高于干预前(P<0.05),且研究组高于对照组(P<0.01);干预后,两组RABQ、MMAS-8、生活质量评分均高于干预前(P<0.05),且研究组高于对照组(P<0.01);干预后,研究组运动依从性分级优于对照组(P<0.05)。结论:对老年尿毒症维持性血液透析患者应用动力取向干预联合量化运动指导,不仅能提高患者睡眠质量,缓解疲劳状态,增加患者运动量,还能提高患者心理韧性及依从性,改善患者生活质量。

关键词：动力取向干预量化运动尿毒症血液透析

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Impacts of Topographic Complexity on Modeling Moisture Transport and Precipitation over the Tibetan Plateau in Summer

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Advances in Atmospheric Sciences 2022年第7期39卷 1151-1166,I0023,I0024页

作者： Gudongze LI Haoming CHEN mingyue xu Chun ZHAO Lei ZHONG Rui LI Yunfei FU Yanhong GAO School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026China Frontiers Science Center for Planetary Exploration and Emerging Technologies University of Science and Technology of ChinaHefei 230026China Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences Fudan UniversityShanghai 200433China

The non-hydrostatic global variable resolution model(MPAS-atmosphere)is used to conduct the simulations for the South Asian Summer monsoon season(June,July,and August)in 2015 with a refinement over the Tibetan Plateau(TP)at the convection-permitting scale(4 km).Two experiments with different topographical datasets,complex(4-km)and smooth(60-km)topography,are designed to investigate the impacts of topographical complexity on moisture transport and *** with the observations and reanalysis data,the simulation can successfully capture the general features of key meteorological fields over the TP despite slightly underestimating the inflow through the southern *** results indicate that the complex topography can decrease the inward and outward moisture transport,ultimately increasing the total net moisture transport into the TP by~11%.The impacts of complex topography on precipitation are negligible over the TP,but the spatial distributions of precipitation over the Himalayas are significantly *** the inclusion of complex topography,the sharper southern slopes of the Himalayas shift the lifted airflow and hence precipitation northward compared to the smooth *** addition,more small-scale valleys are resolved by the inclusion of complex topography,which serve as channels for moisture transport across the Himalayas,further favoring a northward shift of ***,the difference between the two experiments with different topography datasets is mainly attributed to their differing representation of the degree of the southern slopes of the Himalayas and the extent to which the valleys are resolved.

关键词： convection-permitting simulation Tibetan Plateau complex topography moisture transport precipitation

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2023年世界游泳锦标赛奖牌分布特征分析

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安徽体育科技 2024年第3期45卷 31-35页

作者：高国程李泳儒徐明月孙震赵鲁南曲阜师范大学体育科学学院山东曲阜273165

通过文献资料法、录像观察法、数理统计法等研究方法,以2023年世界游泳锦标赛为切入点,对本届世界游泳锦标赛奖牌分布进行多元化分析,结果显示:中国队竞技实力雄厚,居于榜首位置,在各个项目实现多点开花,特别是难美性项群项目,其他国家... 详细信息

通过文献资料法、录像观察法、数理统计法等研究方法,以2023年世界游泳锦标赛为切入点,对本届世界游泳锦标赛奖牌分布进行多元化分析,结果显示:中国队竞技实力雄厚,居于榜首位置,在各个项目实现多点开花,特别是难美性项群项目,其他国家难以对抗;澳大利亚队有较高竞技水平,在多个项目上具有夺金水平;美国队发挥失利,但其优秀后备人才雄厚,逐步形成了“三足鼎立”,其它国家相互抗衡的新态势。

关键词：世界游泳锦标赛奖牌分布竞技格局特征分析

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Cerium refinement of grains and primary carbides during solidification of Cr_(4)Mo_(4)V bearing steel

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Journal of Rare Earths 2024年第4期42卷 783-792页

作者： Weifeng Liu Jianqiang Wang mingyue Sun Bin xu Jiahao Yao Qunbo Fan Dianzhong Li Chongqing Innovation Center Beijing Institute of TechnologyChongqing401135China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

The effect of cerium(Ce)on the solidification microstructure of Cr_(4)Mo_(4)V bearing steel was investigated via a combined experimental and theoretical *** a trace amount(0.056 wt%)of Ce addition,the coarse columnar grains in as-cast microstructure transform into equiaxed ones,and the average diameter is reduced from 56 to 27μ*** network-like and bulky primary MC and M2C carbides at the interdendritic regions become disconnected and refined,and their volume percentage decreases from4.15 vol%to 2.1 vol%.Ce-inclusions acting as heterogeneous nucleation agents of prior-austenite grains and Ce atoms segregating at grain boundaries,both contribute to the refinement of *** calculations reveal that primary carbides are precipitated afterγ-austenite forms near the end of the solidification *** modification of primary carbides in size and amount is mainly attributed to the isolated remaining melt separated by refinedγ-austenite grains in which the nucleation of carbides is promoted,while the growth is restrained owing to the less segregation of alloying elements.

关键词： Cr_(4)Mo_(4)V bearing steel Rare Earths Grains Primary carbides Refinement

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Lotus root-like RuIr alloys with close-packed(0001)branches:Strain-driven performance for acidic water oxidation

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Journal of Energy Chemistry 2024年第5期92卷 579-590页

作者： mingyue Xiao Wanli xu Rongchao Li Yanhui Sun Jingjun Liu Feng Liu Jun Gan Shixin Gao Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical TechnologyBeijing 100029China Yunnan Precious Metals Lab Kunming 650100YunnanChina

Achieving composition tunability and structure editability of nanoalloys with high level strain may be an efficient strategy to remarkably boost catalytic performance toward oxygen evolution reaction(OER)in acidic water ***,lotus root-like RuIr alloys with native micro-strain were constructed by an epitaxial growth of Ru-richened hcp-(0001)branches on Ir-richened fcc-(111)seeds using a polyol thermal synthesis *** resultant Ru_(60)Ir_(40) alloy shows an OER overpotential of 197 mV at 10 mA cm^(-2) and a Tafel slope of 46.59 mV dec^(-1),showing no obvious activity decay for 80 h continuous chronopotentiometry test in 0.5 M H_(2)SO_(4).The related characterizations including X-ray absorption fine structure(XAFS)spectroscopy and density functional theory(DFT)calculations show that that the remarkably improved activity of the lotus root-like alloy can be attributed to the(0001)facet-triggered strain,which can efficiently optimize the electronic band structure of the active metal and the weakening of the chemisorption of oxygen-containing substances to boost OER ***,this work provides a new strategy to designing a class of advanced electrocatalysts with high strain using diverse nanostructures as building materials for carbon-free clean energy conversion systems.

关键词： Rulr alloy Lotusroot-like structure Strain Oxygene volution reaction Activity

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