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Analysis of a Convective Storm Crossing Poyang Lake in China

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Journal of Meteorological Research 2020年第3期34卷 529-545页

作者： Haibo ZOU Shuwen ZHANG Yanan LIU Weidong ZHANG xixi yang College of Atmosphere Sciences Lanzhou UniversityLanzhou 730000 Institute of Meteorological Sciences of Jiangxi Province Jiangxi Meteorological BureauNanchang 330046

A convective storm crossing Poyang Lake(PL)in China during 1200-1600 UTC on 13 May 2015 is *** results show that this storm occurs ahead of a 500-hPa trough with weak low-level temperature advection and a convectively stable layer between 925 and 850 hPa,and the tail of the storm is enhanced when its spearhead sweeps over PL after the *** to the heating and moistening of PL,the convectively stable layer over PL is destabilized;and instead,a deep(below 700 hPa)convectively unstable layer is ***,both the radiative cooling and the storm-induced cooling result in a rapid air(near-surface)and land temperature decrease in the surrounding ***,a large lake-land temperature difference(about 6℃)occurs,which is conducive to generating land-lake breeze and enhancing the convergence of the low-level ***,the PL-induced deep convectively unstable layer and the enhanced low-level convergence jointly strengthen the crossing *** further confirm this,two simulations(with or without PL)are conducted with the Weather Research and Forecast(WRF)*** simulation with PL successfully reproduces the evolution of the storm crossing PL,while the simulation without PL *** the simulation with PL,a highμse tongue at 850 hPa associated with the storm moves eastward and downward,and merges with the PL-induced lake boundary layer,forming a deep convectively unstable layer under 700 ***,in the simulation without PL,the stable layer constantly maintains under 900 *** addition,the 900-hPa wind difference between the simulations with and without PL shows a land-lake breeze circulation that strengths the convergence of the low-level wind.

关键词： Poyang Lake(PL) lake-enhanced precipitation lake–land breeze convective instability

Erratum on “Engineering of a universal polymeric nanoparticle platform to optimize the PEG density for photodynamic therapy” [Sci. China. Chem., 2019, 62: 1379–1386]

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Science China Chemistry 2019年第10期62卷 1421-1422页

作者： xixi yang Jie Li Yue Yu Junxia Wang Dongdong Li Ziyang Cao Xianzhu yang Division of Gastroenterology Affiliated Provincial HospitalAnhui Medical UniversityHefei 230001China School of Biomedical Science and Engineering South China University of TechnologyGuangzhou 510006China Institutes for Life Sciences School of MedicineSouth China University of TechnologyGuangzhou 510006China Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005China

In a recent publication [1], these images in Figures 6(b, c)(^NPEG-NPCe6 group), S7, S9 and S10 were inadvertently taken the incorrect images in the production. The corrected versions are shown below. And, the quantif... 详细信息

关键词： Figure polymeric nanoparticle

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A Few Thoughts on Teaching Interpretation

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校园英语 2014年第36期 23-24页

作者： yang xixi Jiangxi Agricultural University

本文意在阐述口译员在交流中扮演的不同角色,从语言和非语言角度解释优秀口译员不可或缺的素质。

关键词：口译的功能口译员素质

Soil Erosion Changes over the Past Five Decades in the Red Soil Region of Southern China

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Journal of Mountain Science 2010年第1期7卷 92-99页

作者： LIANG Yin LI Decheng LU xixi yang Xuan PAN Xianzhang MU Huan SHI Deming ZHANG Bin Institute oj: Soil Science Chinese Academy of Sciences Nanjing 210008 China Department of Geography National University of Singapore Singapore 119260 Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil Science Chinese Academy of Sciences. Nanjing 210008 China

This paper reports the dynamic changes of soil and water loss in the red soil region of Southern China since the 1950s. The red soil region covers eight provinces: Jiangxi, Zhejiang, Fujian, Anhui, Hubei, Hunan, Guangdong and Hainan. From the 1950s to 1986, the annual rate of soil erosion increased by 3.4%. From 1986 to 1996 and from 1996 to 2000, the annual rates of soil erosion decreased by 2.0% and 0.32%, respectively. Field surveys showed that from 2000 to 2005, the area of soil and water loss decreased annually by 1.2%. This decrease was a result of large-scale erosion control activities across China. Although the eroded soil has been restored, the restoration process is very slow and full restoration will take a long time. Our report suggests that controlling soil and water loss is a challenging task, and additional measures must be taken to effectively control the soil erosion in the red soil region.

关键词： red soil region soil and water loss dynamic change remote sensing field samplingsurvey

全球数字贸易的联系强度、时空特征及影响因素

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统计与决策 2024年第24期40卷 101-106页

作者：阳茜茜尹潇潇云南财经大学统计与数学学院昆明650221 上海立信会计金融学院统计与数学学院上海201209

文章基于数字贸易的广义定义对2009—2020年全球主要经济体数字贸易额进行测算,采用修正引力模型和社会网络分析方法探究全球数字贸易的联系强度、时空特征及影响因素。研究发现:(1)全球主要经济体间的数字贸易联系强度不断提升,欧美发... 详细信息

文章基于数字贸易的广义定义对2009—2020年全球主要经济体数字贸易额进行测算,采用修正引力模型和社会网络分析方法探究全球数字贸易的联系强度、时空特征及影响因素。研究发现:(1)全球主要经济体间的数字贸易联系强度不断提升,欧美发达国家和地区在联系强度上具有明显优势;(2)数字贸易的空间网络整体格局基本稳定,具有“小世界”特性,可以划分为欧盟社团、亚太社团以及大西洋伙伴社团,英、美等欧美国家处于网络中心地位,长期主导全球数字贸易市场,中国在数字贸易网络中的影响力正持续扩大;(3)经济水平、贸易开放度、技术创新、互联网安全基础及是否签订自由贸易协定显著影响数字贸易出口,经济体间电子交易和支付系统壁垒不利于数字贸易出口。

关键词：数字贸易修正引力模型联系强度全球数字贸易网络时空特征

Wetland and habitat dynamics in the evolving landscape of the Middle yangtze River Basin

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Journal of Geographical Sciences 2025年第1期35卷 88-111页

作者： yang Peng SUN Kaiya ZHU Yanchao XIA Jun HUANG Heqing SONG Jingxia SHI Xiaorui LU xixi Hubei Key Laboratory of Regional Ecology and Environmental Change School of Geography and Information Engineering China University of Geosciences Department of Geography National University of Singapore State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University

Wetlands play a critical role in the global environment. The Middle yangtze River Basin(MYRB), known for its abundant wetland resources, has experienced notable changes resulting from the complex interplay of environmental factors. Therefore, we investigated the spatiotemporal characteristics of wetland ecological quality in the MYRB from 2001 to *** the random forest(RF) regression algorithm and patch-generated land-use simulation(PLUS) model, we forecasted variations in wetland habitat quality and their determinants under the Shared Socioeconomic Pathway-Representative Concentration Pathway(SSPRCP) framework from 2035 to 2095. The main findings are as follows:(1) The RF algorithm was optimal for land-use and land-cover(LULC) classification in the MYRB from 2001 to 2020,when notable changes were observed in water bodies and buildings. However, the forested area exhibited an increase and decrease of 3.9% and 1.2% under the SSP1-2.6 and SSP5-8.5 scenarios, respectively, whereas farmland exhibited a diminishing trend.(2) Wetlands were primarily concentrated in the central and eastern MYRB, with counties in the southwest exhibiting superior ecological-environmental quality from 2001 to 2020. Notably,wetland coverage revealed significantly high level, significant changes, frequent but relatively minor changes under the SSP1-2.6, SSP2-4.5, and SSP 5-8.5 scenarios, respectively.(3)Regions with lower habitat quality were primarily concentrated in urbanized areas characterized by frequent human activities, indicating a clear degradation in habitat quality across different scenarios. In conclusion, we established a foundational framework for future investigations into the eco-hydrological processes and ecosystem quality of watersheds.

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结构性剥夺:算法受众隐私剥夺感的生成逻辑

山东师范大学学报（社会科学版） 2023年第6期68卷 125-138页

作者：杨喜喜李本乾上海交通大学媒体与传播学院上海200240

智能算法在带来社会福祉的同时也生成了隐私剥夺风险,并可能引发从个人到共同体的社会结构性隐私剥夺感。采用深度访谈法获取青年群体中的34位(份)经验资料,扎根考察了算法受众隐私剥夺感的生成机制。研究发现,隐私剥夺感并非简单地源... 详细信息

智能算法在带来社会福祉的同时也生成了隐私剥夺风险,并可能引发从个人到共同体的社会结构性隐私剥夺感。采用深度访谈法获取青年群体中的34位(份)经验资料,扎根考察了算法受众隐私剥夺感的生成机制。研究发现,隐私剥夺感并非简单地源于算法平台对个人隐私资源的粗暴争夺抑或绝对剥夺,而是外部场景、剥夺行为与个人隐私价值能力三者之间综合作用的结果。在智能传播环境下,传播技术渗透、隐私边界消融和权力结构操控相互交织构成了隐私剥夺感的外部生成场景,“资源剥夺→人格剥夺→行为剥夺”的转化过程构成了隐私剥夺感的内在生成逻辑,个体持续感知无力对抗一系列相续、多阶和累加的结构性隐私剥夺行为,最终引发了算法受众的隐私剥夺感。对算法受众来说,算法隐私剥夺行为带来的隐私未得、人格受损及抵抗无力让他们萌生出“应得、想得的隐私被剥夺”的不公平心理,并陷入一种“抵抗无力或徒劳”的状态。

关键词：隐私剥夺感算法生成机制青年群体扎根理论方法

基于在线双向拍卖的虚拟网络切片资源调度机制

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电子与信息学报 2018年第7期40卷 1738-1744页

作者：陈前斌施颖洁杨希希唐伦重庆邮电大学移动通信技术重点实验室重庆400065

为解决5G网络切片间资源分配的问题,该文提出一种基于在线双向拍卖(ODA)的资源调度机制。该机制首先针对不同的业务需求和业务收益确定网络切片的优先级和单位资源报价;其次明确最大化网络收益的目标建立线下单向拍卖模型;进一步,考虑... 详细信息

为解决5G网络切片间资源分配的问题,该文提出一种基于在线双向拍卖(ODA)的资源调度机制。该机制首先针对不同的业务需求和业务收益确定网络切片的优先级和单位资源报价;其次明确最大化网络收益的目标建立线下单向拍卖模型;进一步,考虑资源的动态分配和回收利用,提出价格更新算法实时更新资源价格;最后,综合线下单向拍卖机制和价格动态变化机制建立在线双向拍卖模型,为切片动态分配资源。仿真结果表明,该机制在提高网络收益的同时可以保证各切片用户的QoS需求。

关键词： 5G虚拟网络切片资源分配在线双向拍卖切片优先级

无线虚拟网络中基于自回归滑动平均预测的在线自适应虚拟资源分配算法

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电子与信息学报 2019年第1期41卷 16-23页

作者：唐伦杨希希施颖洁陈前斌重庆邮电大学移动通信技术重点实验室重庆400065

该文针对无线虚拟化网络中业务的不确定和信息反馈的时延而引起虚拟资源分配不合理,提出一种基于自回归滑动平均(ARMA)预测的在线自适应虚拟资源分配算法。首先,该算法以保障虚拟网络队列上溢概率为目标对时频资源和缓存资源进行联合分... 详细信息

该文针对无线虚拟化网络中业务的不确定和信息反馈的时延而引起虚拟资源分配不合理,提出一种基于自回归滑动平均(ARMA)预测的在线自适应虚拟资源分配算法。首先,该算法以保障虚拟网络队列上溢概率为目标对时频资源和缓存资源进行联合分配,并建立虚拟网络总成本最小化的理论分析模型。其次,考虑到虚拟网络对不同资源差异化的应用需求,设计了一种多时间尺度的资源动态调度机制,在长周期上基于ARMA模型的预测信息实现缓存资源的预留策略,在短周期上基于利用大偏差原理推导的队列上溢概率对虚拟网络优先级排序,并根据确定的优先级动态调度时频资源,从而满足各虚拟网络的业务需求。仿真结果表明,该算法可有效降低比特丢失率,同时提升物理资源的利用率。

关键词：无线虚拟化网络资源分配多时间尺度自回归滑动平均大偏差原理