检索结果-南通市图书馆

Acta Oceanologica Sinica 2013年第6期32卷 6-12页

作者： ZHENG Bin LU Feng wei hongcheng Guangzhou Institute of Tropical and Marine Meteorology China Meteorological Administration Nanjing University of Information Science & Technology

The South China Sea summer monsoon （SCSSM） behaves with prominent climate variability from the in- traseasonal to interdecadal time scales. On the interannual time scale, the biennial variability （so-called tropospheric biennial oscillation, TBO） is as important as the E1 Nifio-Southem Oscillation （ENSO） period. Some observed data sets, including reanalysis data, are used to explore the associated air-sea interactive physical processes and how the SCSSM TBO affects the ENSO. The results show that the shearing vorticity induced by the north Indian Ocean sea surface temperature anomalies （SSTAs） and the anomalous Philip- pine Sea anticyclone both contribute to the TBO in the SCSSM. The results also indicate that the ENSO has a weak effect on the SCSSM TBO, whereas the latter affects the ENSO to some extent.

关键词： South China Sea monsoon tropospheric biennial oscillation El Nifio-Southern Oscillation

Residential energy transition and chronic respiratory diseases

在线全文

学校读者我要写书评

暂无评论

The Innovation 2024年第3期5卷 33-43页

作者： hongcheng wei Qiurun Yu Danrong Chen Mingzhi Zhang Quanquan Guan Bo Hang Antoine M.Snijders Adrian Covaci Yankai Xia State Key Laboratory of Reproductive Medicine and Offspring Health Center for Global HealthSchool of Public HealthNanjing Medical UniversityNanjing 211166China Key Laboratory of Modern Toxicology of Ministry of Education School of Public HealthNanjing Medical UniversityNanjing 211166China The Affiliated Wuxi People’s Hospital of Nanjing Medical University Wuxi People’s HospitalWuxi Medical CenterNanjing Medical UniversityWuxi 214023China Biological Systems and Engineering Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Toxicological Centre University of Antwerp2610 WilrijkBelgium

Obtaining clean energy is of prime importance for planetary health and sustainable *** aimed to assess the association between residential energy transition and the risk of chronic respiratory *** data from the Global Health Observatory and Global Burden of Diseases,Injuries,and Risk Factors Study,we delineated the spatial distribution and temporal trends of the population using clean fuels for cooking at a global *** the China Health and Retirement Longitudinal Study,we performed rigorous and well-structured multistage analyses incorporating both cross-sectional and prospective data analyses to examine the associations between solid fuel use,residential energy transition,duration of solid fuel use,and the risk of chronic respiratory *** great progress,huge disparities in access to clean energy persist *** energy transition was associated with a lower risk of chronic respiratory *** the period of 2011–2013,compared with persistent solid fuel users,both participants who switched from solid to clean fuels(adjusted risk ratio[RR]0.78,95%confidence interval[CI]0.62–0.98)and persistent clean fuel users(adjusted RR 0.71,95%CI 0.57–0.89)had significantly lower risk of chronic respiratory diseases(p<0.001 for trend).Consistent associations were observed in the period of 2011–2015 and 2011–*** energy transition from solid to clean fuels could reduce the risk of chronic respiratory *** is a valuable lesson for policy-makers and the general public to accelerate energy switching to alleviate the burden of chronic respiratory diseases and achieve health benefits,particularly in low-and middle-income countries.

关键词： cooking income globally

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于短视频网络的互联网舆情演化研究

数据分析与知识发现 2024年第5期8卷 113-126页

作者：魏宏程朱恒民魏静叶东宇南京邮电大学管理学院南京210003 江苏高校哲学社会科学重点研究基地—信息产业融合创新与应急管理研究中心南京210003

【目的】短视频已成为互联网舆情传播的新途径。为揭示短视频舆情的演化特征,本文提出基于短视频网络的舆情演化分析方法。【方法】分别计算短视频标题、封面和视频内容间相似度,构建短视频网络;基于层次聚类法从网络中识别视频主题,计... 详细信息

【目的】短视频已成为互联网舆情传播的新途径。为揭示短视频舆情的演化特征,本文提出基于短视频网络的舆情演化分析方法。【方法】分别计算短视频标题、封面和视频内容间相似度,构建短视频网络;基于层次聚类法从网络中识别视频主题,计量视频中音频与标题的情感;将视频发布账号划分为不同类别的利益相关者;最后,从主题、情感和利益相关者三个维度分析短视频舆情演化。【结果】研究结果表明,利用视频的多模态特征和视频间关系,可以有效地描述短视频舆情演化态势,且“标题+封面+视频内容”模态组合的SSE为6.708,优于其他单模态或多模态组合。【局限】本文使用的抖音平台短视频的音频数据包含纯背景音乐,使得音频模态的分析存在一定偏差。【结论】本研究有利于掌握短视频舆情中主题与群体情绪的演化,发掘不同视频账号的关注点与情感变化,及时对短视频舆情进行监管与引导。

关键词：舆情演化短视频网络多模态特征利益相关者

Effects of increased seeding density on seedling characteristics,mechanical transplantation quality,and yields of rice with crop straw boards for seedling cultivation

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2025年第1期24卷 101-113页

作者： Yufei Ling Mengzhu Liu Yuan Feng Zhipeng Xing Hui Gao Haiyan wei Qun Hu hongcheng Zhang Research Institute of Rice Industrial Engineering Technology Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou 2250o0China

The high labor demand during rice seedling cultivation and transplantation poses a significant challenge in advancing machine-transplanted rice *** problem may be solved by increasing the seeding rate during seedling production while reducing the number of seedling *** study conducted field experiments from 2021 to 2022,using transplanting seedling ages of 10 and 15 days to explore the effects of 250,300,and 350 g/tray on the seedling quality,mechanical transplantation quality,yields,and economic benefits of *** commonly used combination of 150 g/tray with a 20-day seedling age in rice production was used as *** cultivation of seedlings under a high seeding rate and short seedling age significantly affected seedling characteristics,but there was no significant difference in seedling vitality compared to *** minimum number of rice trays used in the experiment was observed in the treatment of 350-10(300 g/tray and 10-day seedling age),only 152-155 trays ha^(-1),resulting in a 62%reduction in the number of trays *** increasing the seeding rate of rice,missed holes during mechanical transplantation decreased by 2.8 to 4%.The treatment of 300-15(300 g/tray and 15-day seedling age)achieved the highest yields and economic *** results indicated that using crop straw boards can reduce the application of seedling *** that basis,rice yields can be increased by raising the seeding rate and shortening the seedling age of rice without compromising seedling quality.

关键词： machine-transplanted rice crop straw board seedling rate seedling quality mechanical transplanta quality yield

血清铁降低对急性ST段抬高心肌梗死患者院内泵功能衰竭的预测价值

在线全文

学校读者我要写书评

暂无评论

南方医科大学学报 2015年第4期35卷 610-614页

作者：叶刚刘丽余健甘峰韦宏成暨南大学附属第一医院内科广东广州510632 暨南大学附属第一医院校门诊部广东广州510632 中山大学化学与化学工程学院广东广州510275

目的：探讨血清铁水平降低对急性ST段抬高心肌梗死患者发生院内急性心力衰竭的预测价值。方法对287名急性ST段抬高心肌梗死（STEMI）患者资料进行回顾性分析，按整个队列血清铁水平的四分位数将患者分为4组，比较不同血清铁水平组的院... 详细信息

目的：探讨血清铁水平降低对急性ST段抬高心肌梗死患者发生院内急性心力衰竭的预测价值。方法对287名急性ST段抬高心肌梗死（STEMI）患者资料进行回顾性分析，按整个队列血清铁水平的四分位数将患者分为4组，比较不同血清铁水平组的院内急性心衰发病率；分析血清铁水平与Hb、BNP、cTnI、hsCRP水平等参数间的关系；比较血清铁水平、BNP、cTnI和hsCRP等生物标志物与住院期间急性心衰、心源性休克发病率和死亡率等不良后果的关系。结果全部287名STEMI患者的入院平均血清铁水平是10.20μmol/L（6.90，14.40μmol/L），血清铁水平的四分位数：Q1≤6.90μmol/L，Q26.91-10.19μmol/L，Q310.20-14.39μmol/L，Q4≥14.40μmol/L。从Q1到Q4组，院内急性心力衰竭发病率分别是Q179.5%，Q264.3%，Q350.0%和Q445.9%（P〈0.001）；单变量Logistic回归分析结果显示血清铁水平低于8.95μmol/L组患者发生院内急性心衰的危险度（OR）是血清铁高于8.95μmol/L组的近3倍（OR 3.358，95%CI 1.791-6.294，P〈0.001），多变量Logistic回归分析结果显示OR 2.316（95%CI 1.205-4.453，P=0.012）。结论血清铁水平降低是STEMI患者院内急性心力衰竭的独立危险因素。

关键词：急性心力衰竭血清铁缺铁急性心肌梗死

在线全文

学校读者我要写书评

暂无评论

急性胰腺炎相关血栓性血小板减少性紫癜1例

胃肠病学 2020年第1期25卷 63-64页

作者：陈茗榆冯淑芬韦宏成暨南大学附属第一医院消化科 510630

病例:患者男,44岁,2 d前早餐后出现左上腹疼痛,放射至后背,伴恶心;1 d前因病情加重至外院就诊,淀粉酶405 U/L,血小板9×10^9/L,血红蛋白111 g/L。因诊断不明且病情加重于2018年12月31日转入我院,患者既往无特殊病史、无服用抗血小板药... 详细信息

病例:患者男,44岁,2 d前早餐后出现左上腹疼痛,放射至后背,伴恶心;1 d前因病情加重至外院就诊,淀粉酶405 U/L,血小板9×10^9/L,血红蛋白111 g/L。因诊断不明且病情加重于2018年12月31日转入我院,患者既往无特殊病史、无服用抗血小板药物史。体格检查:体温36.8℃,脉搏108次/min,呼吸15次/min,血压172/116 mm Hg(1 mm Hg=0.133 kPa),BMI 29.03 kg/m 2;嗜睡;腹肌紧张,上腹部压痛,无反跳痛。

关键词：紫癜,血栓性血小板减少性急性胰腺炎诊断治疗

Dynamic event-triggered data-driven iterative learning bipartite tracking control for nonlinear MASs with prescribed performance

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2025年第1期68卷 292-305页

作者： Tao SHI wei-wei CHE School of Mechatronic Engineering and Automation Shanghai University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University College of Information Science and Engineering Northeastern University

This article proposes a distributed dynamic event-triggered data-driven iterative learning control(DET-DDILC)scheme under a predefined performance to tackle the bipartite tracking control problem for multiagent systems(MASs). An improved dynamic linearization technique is utilized to convert the nonlinear MASs into an iterative linear data model. First,a peer-to-peer mapping function is introduced to map the constrained distributed system output homeomorphism to an unconstrained one. In addition, a DET mechanism based on a time-iteration-varying function is devised to conserve network communication resources. Based on the unconstrained transformation and the designed DET mechanism, the DET-DDILC algorithm is devised to ensure that the bipartite tracking performance of MASs can be within the preset range. Finally, the effectiveness and feasibility of the designed control scheme are demonstrated via a simulation case by a comparison.

关键词： bipartite tracking control prescribed performance event-triggered iterative learning control multiagent systems

加强信息化的行政推进以信息化催化市场监管现代化

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国市场监管研究 2021年第11期 48-51页

作者：韦宏成市场监管总局信息中心党委

市场监管总局组建后,监管领域广、服务对象杂、新问题多与监管人员少、任务重、风险大的矛盾日益突出,市场监管部门内部仍然存在职责交叉、分散、缺失问题,亟须实现从物理整合到化学融合的转变。信息化是促进市场监管部门实现化学融合... 详细信息

市场监管总局组建后,监管领域广、服务对象杂、新问题多与监管人员少、任务重、风险大的矛盾日益突出,市场监管部门内部仍然存在职责交叉、分散、缺失问题,亟须实现从物理整合到化学融合的转变。信息化是促进市场监管部门实现化学融合的催化剂。在催化过程中,创新理念和转变观念是关键,应以"智慧监管"的信息化理念为引领,以行政力量主导"智慧监管"的实现,把"智慧监管"作为行政工作而非单纯的技术实现,高度重视信息化的行政推进力,加快推进市场监管治理体系和治理能力现代化。

关键词：信息化智慧监管市场监管现代化

Bionic breathable open framework ionomer for medium-temperature fuel cells

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第2期68卷 407-408页

作者： Zidong wei State Key Laboratory of Advanced Chemical Power Sources School of Chemistry&Chemical EngineeringChongqing UniversityChongqing 400044China

Hydrogen,a green and sustainable energy source characterized by its abundance,zero emission,and high-volumetric energy density,is widely recognized as the fuel of the future and a crucial driver of the global energy *** exchange membrane fuel cells(PEMFCs),renowned for their high energy conversion efficiency,environmental compatibility,and low noise,have become pivotal in hydrogen energy applications[1,2].As the demand for clean energy increases across various application scenarios,expectations for fuel cells to achieve high output power density,simplified thermal management,and improved tolerance to impurity gases are growing.A promising solution is to increase the operating temperature to develop medium-temperature PEMFCs(MT PEMFCs),which bridges the gap between low-temperature fuel cells and high-temperature phosphoric acid fuel *** approach significantly enhances catalyst activity and theoretically improves electrochemical reaction kinetics[3].Elevated temperatures also reduce heat rejection,leading to simplified thermal management systems,and enhance the catalyst’s resistance to gas impurities such as carbon monoxide,thereby broadening the range of usable hydrogen sources[3].

关键词： transition simplified catalyst

Mode-switching cooperative defense strategy for the orbit pursuit-evasion-defense game

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Defence Technology(防务技术) 2025年第2期44卷 272-286页

作者： Yongshang wei Tianxi Liu Cheng wei School of Aerospace Harbin Institute of TechnologyHarbin150000China

This paper presents a mode-switching collaborative defense strategy for spacecraft pursuit-evasiondefense *** these scenarios,the pursuer tries to avoid the defender while capturing the evader,while the evader and defender form an alliance to prevent the pursuer from achieving its ***,the behavioral modes of the pursuer,including attack and avoidance modes,were established using differential game *** modes are then recognized by an interactive multiple model-matching algorithm(IMM),that uses several smooth variable structure filters to match the modes of the pursuer and update their probabilities in real *** on the linear-quadratic optimization theory,combined with the results of strategy identification,a two-way cooperative optimal strategy for the defender and evader is proposed,where the evader aids the defender to intercept the pursuer by performing luring *** results show that the interactive multi-model algorithm based on several smooth variable structure filters perform well in the strategy identification of the pursuer,and the cooperative defense strategy based on strategy identification has good interception performance when facing pursuers,who are able to flexibly adjust their game objectives.

关键词： Cooperative policy Differential games Orbit pursuit-evasion-defense game Mod recognition