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A meteorologically adjusted ensemble Kalman filter approach for inversing daily emissions:A case study in the Pearl River Delta,China

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Journal of Environmental Sciences 2022年第4期34卷 233-248页

作者： Guanglin Jia Zhijiong Huang Xiao Tang Jiamin Ou Menghua Lu Yuanqian Xu Zhuangmin Zhong Qing’e Sha Huangjian Wu Chuanzeng Zheng Tao Deng Duohong Chen Min He Junyu Zheng School of Environment and Energy South China University of TechnologyUniversity Town CampusGuangzhou 510006China Institute for Environmental and Climate Research Jinan UniversityGuangzhou 511486China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China Faculty of Social and Behavioural Sciences Utrecht UniversityUtrechtCH 3584the Netherlands Guangzhou Institute of Tropical and Marine Meteorology China Meteorological AdministrationGuangzhou 510640China State Environmental Protection Key Laboratory of Regional Air Quality Monitoring Guangdong Environmental Monitoring CenterGuangzhou 510308China Department of Environmental Science and Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China

The conventional Ensemble Kalman filter(EnKF),which is now widely used to calibrate emission inventories and to improve air quality simulations,is susceptible to simulation errors of meteorological inputs,making accurate updates of high temporal-resolution emission inventories challenging.In this study,we developed a novel meteorologically adjusted inversion method(MAEInv)based on the EnKF to improve daily emission estimations.The new method combines sensitivity analysis and bias correction to alleviate the inversion biases caused by errors of meteorological inputs.For demonstration,we used the MAEInv to inverse daily carbon monoxide(CO)emissions in the Pearl River Delta(PRD)region,China.In the case study,60%of the total CO simulation biases were associated with sensitive meteorological inputs,which would lead to the overestimation of daily variations of posterior emissions.Using the new inversion method,daily variations of emissions shrank dramatically,with the percentage change decreased by 30%.Also,the total amount of posterior CO emissions estimated by the MAEInv decreased by 14%,indicating that posterior CO emissions might be overestimated using the conventional EnKF.Model evaluations using independent observations revealed that daily CO emissions estimated by MAEInv better reproduce the magnitude and temporal patterns of ambient CO concentration,with a higher correlation coefficient(R,+37.0%)and lower normalized mean bias(NMB,-17.9%).Since errors of meteorological inputs are major sources of simulation biases for both low-reactive and reactive pollutants,the MAEInv is also applicable to improve the daily emission inversions of reactive pollutants.

关键词： Emission inversion Daily emissions Meteorological adjustment Ensemble Kalman filter

Insulin Management for Hypertriglyceridemia in Pregnancy

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Maternal-Fetal Medicine 2023年第1期5卷 47-50页

作者： Decui Cheng Jie Ma menghua Kuang Cong lu Jianrong Weng Yuemin Yang Xianming Xu Department of Obstetrics and Gynecology Shanghai General HospitalShanghai 201600China

To editor:Hypertriglyceridemia is a major risk factor for cardiovascu-lar disease and acute pancreatitis.1Accordingly,during preg-nancy,the growing serum lipid levels have potentially critical implications.2,3However,the management of gestational hypertriglyceridemia is further complicated because of the lackof safety data for most of the lipid-lowering agents.

关键词： Insulin Hypertriglyceridemia Metabolism

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易地扶贫搬迁安置小区消防安全问题与对策

今日消防 2023年第5期8卷 70-72页

作者：卢梦华合山市消防救援大队广西来宾546500

易地扶贫搬迁旨在通过搬迁安置的方式,改善贫困地区群众的生存发展环境,实现脱贫致富。在实施易地扶贫搬迁过程中,既要持续巩固拓展脱贫攻坚成果,又要防止易地搬迁群众出现因灾致贫、返贫的情况。因此,如何做好易地扶贫安置小区的消防... 详细信息

易地扶贫搬迁旨在通过搬迁安置的方式,改善贫困地区群众的生存发展环境,实现脱贫致富。在实施易地扶贫搬迁过程中,既要持续巩固拓展脱贫攻坚成果,又要防止易地搬迁群众出现因灾致贫、返贫的情况。因此,如何做好易地扶贫安置小区的消防安全工作尤为重要。基于此,分析了合山市易地扶贫搬迁安置小区的消防安全问题,提出了几点解决措施,希望为相关工作提供一定的参考。

关键词：易地扶贫搬迁安置小区消防安全问题对策

Changing predominance of norovirus strains in children with acute gastroenteritis in Shanghai,2018–2021

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Virologica Sinica 2023年第5期38卷 671-679页

作者： Lijuan lu Yuanyun Ao Ran Jia Huaqing Zhong Pengcheng Liu menghua Xu Liyun Su Lingfeng Cao Jin Xu Department of Clinical Laboratory Children's Hospital of Fudan UniversityNational Children's Medical CenterShanghai201100China Shanghai Institute of Infectious Disease and Biosecurity Fudan UniversityShanghai201100China

Norovirus(NoV)is a major pathogen that causes acute gastroenteritis(AGE)in people of all ages,especially in children.In this study,we investigated the molecular epidemiological characteristics of NoV in children with AGE in Shanghai from 2018 to 2021.The overall detection rate of NoV was 11.9%(181/1545),with annual detection rates of 9.4%(36/381),13.6%(29/213),5.8%(13/226)and 14.2%(103/725),respectively.Of note,the prevalence of NoV in 2020 was significantly lower than that in 2018-2019(10.9%,65/594)(P=0.023)and 2021(14.2%,103/725)(P=0.000).The 181 NoV strains identified in this study were classified into the GI group(1.1%,2/181),GII group(98.3%,178/181)and GIX group(0.6%,1/181)according to the VP1 gene.The most common NoV VP1 genotype was GII.4 Sydney_2012(63.5%,115/181),followed by GII.3(19.9%,36/181)and GII.2(9.4%,17/181).For P genotypes,174 strains were sequenced successfully according to the RdRp gene,and the predominant genotype was GII.P16(44.8%,78/174),followed by GII.P31(25.9%,45/174)and GII.P12(21.3%,37/174).Among the 174 cases,GII.4 Sydney_2012[P16](36.8%,64/174)was the dominant genotype,followed by GII.4 Sydney_2012[P31](25.3%,44/174),GII.3[P12](20.1%,35/174)and GII.2[P16](8.0%,14/174).In particular,the dominant genotypes in Shanghai changed from GII.4 Sydney_2012[P31]in 2018-2019 to GII.4 Sydney_2012[P16]in 2020-2021.This is the first report to describe the epidemiological changes in NoV infection before and during the COVID-19 pandemic in Shanghai.These data highlight the importance of continuous surveillance for NoV in children with AGE in Shanghai.

关键词： Norovirus(NoV) Acute gastroenteritis Children Genotype Recombination

突发公共卫生事件利益相关者的社会网络情感图谱研究

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图书情报工作 2017年第20期61卷 120-130页

作者：安璐欧孟花武汉大学信息管理学院武汉430072

[目的 /意义]构建突发公共卫生事件利益相关者的社会网络情感网络图谱,以可视化的方式分析突发公共卫生事件中各类利益相关者的情感状态和分布,探寻利益相关者之间的情感传播路径,并结合舆情话题综合分析利益相关者的情感演化态势。[方... 详细信息

[目的 /意义]构建突发公共卫生事件利益相关者的社会网络情感网络图谱,以可视化的方式分析突发公共卫生事件中各类利益相关者的情感状态和分布,探寻利益相关者之间的情感传播路径,并结合舆情话题综合分析利益相关者的情感演化态势。[方法 /过程]以"魏则西事件"为例,通过微博转发关系构建微博用户的社会关系网络,同时标识各用户的利益相关者类型,并计算用户的情感类型及情感强度嵌入社会网络中构建出社会网络情感图谱。[结果 /结论]普通群众的情绪更强烈且易受意见领袖影响,在事件爆发期和蔓延期,主流媒体和自媒体对普通群众的情感影响较大,在衰退期,政府人员和医护人员的参与增加且情感影响变大。随着舆情的演化,各类利益相关者的主导情感也随着变化,自媒体和企业在情感传播中起重要的桥梁作用。

关键词：突发公共卫生事件利益相关者社会网络情感图谱情感传播

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鲁迅藏李金发诗集二种疏考

鲁迅研究月刊 2023年第2期 81-90页

作者：凌孟华重庆师范大学文学院 401331

鲁迅与书可谓有不解之缘。据统计,北京鲁迅博物馆保存的鲁迅先生留下来的藏书,就“共有4000余种,近13800册,范围涉及哲学、社会科学、教育、语言、文学、艺术、历史、考古、宗教、自然科学、医学等各个领域。其中中文书籍2193种,10683册... 详细信息

鲁迅与书可谓有不解之缘。据统计,北京鲁迅博物馆保存的鲁迅先生留下来的藏书,就“共有4000余种,近13800册,范围涉及哲学、社会科学、教育、语言、文学、艺术、历史、考古、宗教、自然科学、医学等各个领域。其中中文书籍2193种,10683册;外文书籍1869种,3115册”①。黄乔生指出:“对一个人所购藏图书的研究,有助于了解一位思想家、文学家的学术渊源。而从接受的赠书中,可以看出一个人与同时代同行业人士的交往情况,对研究当时文坛情形及作家之间的关系等不无参考价值”,②可谓要言不烦,既点明了研究鲁迅藏书的意义和价值,又标识了鲁迅藏书研究的初心与路径。以下对北京鲁迅博物馆藏李金发《微雨》《食客与凶年》略作介绍和疏考。

关键词：李金发学术渊源交往情况意义和价值

城市轨道交通行业大数据服务平台的研究与设计

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通信电源技术 2022年第21期39卷 193-195,199页

作者：阳梦华卢乐天湖南省邮电规划设计院有限公司湖南长沙410000

随着城市轨道交通的建设,城市轨道交通部门需要处理的业务越来越复杂,而复杂的业务增长带来了巨大的数据量,因此需借助大数据技术对城市轨道部门分布在各区域的数据资源进行整合,主要是通过建立城市轨道交通行业大数据服务平台,对归集... 详细信息

随着城市轨道交通的建设,城市轨道交通部门需要处理的业务越来越复杂,而复杂的业务增长带来了巨大的数据量,因此需借助大数据技术对城市轨道部门分布在各区域的数据资源进行整合,主要是通过建立城市轨道交通行业大数据服务平台,对归集的业务数据进行采集、清洗、存储、管理以及利用,规范统一的数据标准,制定数据质量规则,保障数据安全,为轨道交通行业部门增加更多的决策支撑能力,更好、更高效地加强内部业务数据交换和共享,同时打通与外部部门的数据壁垒,通过优质规范的数据资源驱动业务的发展。

关键词：大数据数据标准数据质量

Probabilistic total transfer capability analysis based on static voltage stability region integrated with a modified distributed-level nodal-loading model

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Science China(Technological Sciences) 2015年第12期58卷 2072-2084页

作者： WANG Dan ZHOU Yue JIA HongJie WANG ChengShan lu Ning FAN menghua Key Laboratory of Smart Grid of Ministry of Education Tianjin University Department of Electrical and Computer Engineering North Carolina State University State Grid Energy Research Institute

In this paper, a new evaluation method of probabilistic TTC based on SVSR calculation is developed through a hierarchical simulation. A smooth technology based on the non-parametric kernel estimator is adapted to obtain the time-dependent probabilistic density function of the feeder-head load data. In order to describe possible operating change directions of the operating point, the original hyper-cone-like(HCL) model is constructed to consider the probabilistic distribution function(PDF) extracted from feeder-head load data to replace the simple Normal Distribution model and the uncertain generator outputs. To realize the fast TTC calculation of the current operating point in random conditions, a sub-hyper-cone-like(SHCL) model in full power injections space is proposed, which is a similarity transformation of the original one.

关键词：概率密度函数分布模型静态电压稳定域力分析分布式加载节点概率分布函数

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计算机网络入侵检测技术探究

广东蚕业 2019年第3期53卷 128-129页

作者：芦梦华山西应用科技学院山西太原030000

全球信息化进程伴随着网络技术的飞速发展,有了极大的进步,在这种发展背景下,使得网络信息系统的基础设施属性,体现得尤为明显,它不只关乎某一单位、行业或部门,以至于可上升到关乎整个国家的国计民生,所以,网络安全极大的关系着国防安全。

关键词：计算机网络入侵检测技术