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基于文献计量的盐湖研究进展及前沿态势分析
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作者 李雷明 葛飞 +2 位作者 王建萍 陈文娟 王毓菁 《盐湖研究》 CAS CSCD 2024年第2期80-89,共10页
基于web of science和知网数据源,利用Derwent Data Analyzer,VOSvievwer和Incites对1960—2022年盐湖相关文献进行计量分析,以深入了解国际和国内盐湖研究进展和发展趋势。分析得出近60多年盐湖研究发文量整体上呈先稳定后增加的趋势;... 基于web of science和知网数据源,利用Derwent Data Analyzer,VOSvievwer和Incites对1960—2022年盐湖相关文献进行计量分析,以深入了解国际和国内盐湖研究进展和发展趋势。分析得出近60多年盐湖研究发文量整体上呈先稳定后增加的趋势;盐湖相关研究国际发文数量最高的期刊是International Journal of Systematic and Evolutionary Microbiology,国内发文量最高的期刊是《盐湖研究》。美国和中国是盐湖研究的核心力量,两者的总发文量、总引频次和高被引论文数均居前2位。盐湖研究领域发文量最高的机构是中国科学院,其隶属单位青海盐湖研究所发文量占比最高。国际文献作者前15位中8位来自中国。国际和国内研究热点演进分析得出今后盐湖资源的分离和提取将得到持续关注,高被引文章分析说明近年来盐湖研究关注最多的为盐湖资源的分离提取,尤其是锂资源。整体而言,有关盐湖研究还在不断拓展和延伸,未来我国应在文章质量、研究方向布局和影响力上继续提升,发挥国内盐湖研究的对外影响力。 展开更多
关键词 盐湖 文献计量 Derwent data Analyzer VOSvievwer Incites 研究趋势
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后量子密码技术研究热点可视化分析 被引量:2
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作者 李非凡 《河南理工大学学报(自然科学版)》 CAS 北大核心 2022年第5期137-145,共9页
后量子密码正处于蓬勃发展时期,分析该领域的研究现状和热点,以便更好地把握密码学科新的研究方向。利用深度挖掘和分析软件(derwent data analyzer,DDA),运用文献计量学、关键词共现分析的方法,揭示后量子密码研究的整体趋势、地域分... 后量子密码正处于蓬勃发展时期,分析该领域的研究现状和热点,以便更好地把握密码学科新的研究方向。利用深度挖掘和分析软件(derwent data analyzer,DDA),运用文献计量学、关键词共现分析的方法,揭示后量子密码研究的整体趋势、地域分布、机构分布和研究热点。结果表明,后量子密码领域研究文献呈上升趋势,其中中国发文量世界排名第一,处于快速发展阶段。后量子密码领域研究主要集中在基于格理论密码、基于编码理论的密码、多变量密码、基于密码杂凑函数的签名等领域,其中基于格理论的加解密算法、数字签名算法、密钥协商协议、密码杂凑函数算法、全同态加密算法已经成为当今密码学科研究的热点。 展开更多
关键词 后量子密码 文献计量学 Derwent data Analyzer 共现分析 可视化
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专利视角下石墨烯超级电容器发展态势研究 被引量:1
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作者 郭景芸 隗玲 +1 位作者 刘春江 李姝影 《中国发明与专利》 2023年第2期12-20,共9页
以Derwent Innovation(德温特创新)平台的专利数据作为研究对象,利用文献计量法、知识图谱可视化方法重点从石墨烯超级电容器领域专利发布的整体趋势、申请国、专利权人以及主题词演化趋势进行分析,揭示最新的石墨烯超级电容器领域的发... 以Derwent Innovation(德温特创新)平台的专利数据作为研究对象,利用文献计量法、知识图谱可视化方法重点从石墨烯超级电容器领域专利发布的整体趋势、申请国、专利权人以及主题词演化趋势进行分析,揭示最新的石墨烯超级电容器领域的发展态势,提升该领域技术在相关产业的应用价值,为相关机构提供数据参考,帮助其调整自身的竞争策略,为我国在石墨烯超级电容器领域技术研发和应用的方向提供指导作用。 展开更多
关键词 石墨烯 超级电容器 专利分析 Itginsight Derwent data Analyzer
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Discussion on the paper “Analyzing short time series data from periodically fluctuating rodent populations by threshold models: A nearestblock bootstrap approach”
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作者 HALL Peter 《Science China Mathematics》 SCIE 2009年第6期1107-1108,共2页
This is a very attractive article. It combines fascinating new methodology with a most interesting dataset, and a highly motivating presentation. However, despite the many
关键词 time A nearestblock bootstrap approach analyzing short time series data from periodically fluctuating rodent populations by threshold models Discussion on the paper data
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Discussion on the paper “Analyzing short time series data from periodically fluctuating rodent populations by threshold models: A nearestblock bootstrap approach”
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作者 LI W.K.& LI GuoDong Department of statistics and Actuarial Science,University of Hong Kong,Pokfulam Road,Hong Kong,China 《Science China Mathematics》 SCIE 2009年第6期1109-1110,共2页
The authors are to be congratulated for an innovative paper in terms of both modelling methodology and subject matter significance. The analysis of short time series is known to be
关键词 time Discussion on the paper A nearestblock bootstrap approach analyzing short time series data from periodically fluctuating rodent populations by threshold models GARCH data
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A study of the strong pulses detected from PSR B0656+14 using the Urumqi 25-m radio telescope at 1540 MHz 被引量:2
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作者 Guo-Cun Tao Ali Esamdin +3 位作者 Hui-Dong Hu Mao-Fei Qian Jing Li Na Wang 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2012年第12期1649-1654,共6页
We report on the properties of strong pulses from PSR B0656+14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total... We report on the properties of strong pulses from PSR B0656+14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total of 67 pulses with signal-to-noise ratios above a 5σthreshold were detected.The peak flux densities of these pulses are 58 to 194 times that of the average profile,and their pulse energies are 3 to 68 times that of the average pulse.These pulses are clustered around phases about 5-ahead of the peak of the average profile.Compared with the width of the average profile,they are relatively narrow,with the full widths at half-maximum ranging from 0.28 ° to 1.78 °.The distribution of pulse-energies follows a lognormal distribution.These sporadic strong pulses detected from PSR B0656+14 have different characteristics from both typical giant pulses and its regular pulses. 展开更多
关键词 stars:neutron-pulsars-pulsars:individual(B0656+14)Options: Encrypt Page Allow Cookies Remove Scripts Remove Objects 收藏本站首页期刊全文库学位论文库会议论文库学术百科吾喜杂志工具书优先出版注册|登录|我的账户基础科学|工程科技I辑|工程科技II辑|医药卫生科技|信息科技|农业科技|哲学与人文科学|社会科学I辑|社会科学II辑|经济管理高级搜索: 用" stars neutron-pulsars—pulsars "到知网平台检索 点击这里搜索更多...《Research in Astronomy and Astrophysics》 2012年12期 加入收藏 获取最新 A study of the strong pulses detected from PSR B0656+14 using the Urumqi 25-m radio telescope at 1540 MHzAli Esamdin 【摘要】: We report on the properties of strong pulses from PSR B0656+14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data a total of 67 pulses with signal-to-noise ratios above a 5σthreshold were detected.The peak flux densities of these pulses are 58 to 194 times that of the average profile and their pulse energies are 3 to 68 times that of the average pulse.These pulses are clustered around phases about 5-ahead of the peak of the average profile.Compared with the width of the average profile they are relatively narrow with the full widths at half-maximum ranging from 0.28 ° to 1.78 °.The distribution of pulse-energies follows a lognormal distribution.These sporadic strong pulses detected from PSR B0656+14 have different characteristics from both typical giant pulses and its regular pulses.【作者单位】 Xinjiang
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Detection Rate and Risk Factors of Abnormal Spinal Curvature Among Children and Adolescents——Jiangsu Province,China,2021–2023
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作者 Yuanyuan Li Yao Xiang +6 位作者 Yan Wang Xiyan Zhang Yiliang Xin Hui Xue Xiaoyan Ni Jie Yang Wei Du 《China CDC weekly》 2025年第6期208-216,I0001,共10页
Introduction:In China,the prevalence of abnormal spinal curvature in children and adolescents is high and the number of cases is increasing in recent years,which seriously threatens physical and mental health of child... Introduction:In China,the prevalence of abnormal spinal curvature in children and adolescents is high and the number of cases is increasing in recent years,which seriously threatens physical and mental health of children and adolescents.Public health surveillance of these abnormalities is crucial for developing targeted interventions.Methods:This study evaluated detection rates and risk factors of spinal curvature abnormalities among children and adolescents in Jiangsu Province,China.This study analyzed data from the population-based“Surveillance for Common Disease and Health Risk Factors Among Students”project,implemented annually from September to November during 2021–2023.Abnormal spinal curvature was assessed using the national“Technical Guide for Prevention and Control of Abnormal Spinal Curvature in Children and Adolescents.”Detection rates were calculated,and associated factors were evaluated using multivariate logistic regression.Results:Annual detection rates were 2.6%,1.8%,and 2.3%,respectively,among children and adolescents aged 6–17 years.Detection rates increased with age and were significantly higher among females compared to males.Adequate physical activity,sufficient sleep,and correct reading and writing postures were protective factors against spinal curvature abnormalities,while low body weight was associated with increased risk.Conclusion:The emerging burden of abnormal spinal curvature necessitates targeted public health interventions,particularly for high school students and females.Beyond implementing early lifestyle interventions such as sufficient outdoor activities,appropriate referrals to public health specialists and orthopedic surgeons may provide additional risk mitigation.Successful outcomes require multisectoral collaboration and parental engagement to achieve sustainable public health improvements. 展开更多
关键词 spinal curvature abnormalities risk factors analyzed data abnormal spinal curvature CHILDREN developing targeted interventionsmethods health surveillance detection rates
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Risk and outcomes of respiratory failure in elderly patients after thoracoscopic assisted radical lung cancer surgery:a retrospective cohort study
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作者 XIE Zhongyao 《China Medical Abstracts(Internal Medicine)》 2025年第1期34-35,共2页
Objective To analyze the clinical data of elderly patients who experienced respiratory failure after undergoing thoracoscopic-assisted radical lungcancer surgery,to identify the risk factors associated with respirator... Objective To analyze the clinical data of elderly patients who experienced respiratory failure after undergoing thoracoscopic-assisted radical lungcancer surgery,to identify the risk factors associated with respiratory failureand toinvestigate the clinical significance of independent risk factors for the early prediction of respiratory failure in this patient population.Methods A total of 42 elderly patients who developed respiratory failure following thoracoscopic-assisted radical lung cancer surgery at our hospital between January 1,2021,and December 31,2023,were continuously collected to form the observation group.Concurrently,a control groupp was established by randomly selecting elderly lung cancer patients who did not experience respiratory failure during the same period,in a 1:1 ratio.Clinical data were collected from both groups,and logistic univariate and multivariate analyses were conducted.A receiver operating characteristic(ROC)curve was employed to evaluate the area under the curve(AUC),as well as the sensitivity and specificity of independent risk factors and their combinations.Results The history of diabetes,PCT levels,and surgical day intake had been identified as independent risk factors for respiratory failure.Multivariate analysis revealed that a history of diabetes(OR:1.29,95%CI:0.89-1.69;P=0.012),PCT(0R:1.75,95%CI:1.51-2.38;P=0.005),and surgical day intake(0R:1.42,95%Cl:1.14-1.76;P<0.001)were significantly associated with the occurrence of postoperative respiratory failure.The area under the curve(AUC)values for predicting respiratory failure were 0.679,0.679,and 0.740,respectively.The sensitivity and specificity for a history of diabetes were 41.2%and 87.1%;for PCT,64.7%and 64.5%;and for surgical day intake,70.6%and 74.2%.Notably,a combined model incorporating these three indicators produced an AUC of 0.918,with a sensitivity of 94.1%and a specificity of 80.6%.Conclusion Following thoracoscopic-assisted radical lung cancer surgery,elderly patients with a history of diabetes,elevated PCT levels,and a daily fluid intake exceeding 2000 ml on the day of surgery demonstrate significant clinical value for the early detection of respiratory failure. 展开更多
关键词 risk factors identify risk factors elderly patients respiratory failureand respiratory failure analyze clinical data thoracoscopic assisted radical lung cancer surgery
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HPV Genotypes and Associated Disease Prevalence in Males with Confirmed HPV Exposure——Shenzhen City,Guangdong Province,China,2018–2022
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作者 Heng Li Nini Li +3 位作者 Feifei Huang Liping Ding Xiaoping Hong Dongzhou Liu 《China CDC weekly》 2025年第23期802-807,共6页
Objectives:Human papillomavirus(HPV)is a globally prevalent infection,with multiple genotypes strongly associated with cancers and other diseases.While epidemiological studies in females are extensive,research on HPV ... Objectives:Human papillomavirus(HPV)is a globally prevalent infection,with multiple genotypes strongly associated with cancers and other diseases.While epidemiological studies in females are extensive,research on HPV genotype distribution in males remains limited.Methods:We conducted a retrospective study by collecting and analyzing clinical and laboratory data from male patients with confirmed HPV infection at Shenzhen People’s Hospital.The distribution of HPV genotypes and their associations with specific disease types were evaluated.Results:A total of 2,037 male participants were included,with an overall HPV infection rate of 45%.Low-risk genotypes predominated,with HPV 6 and HPV 11 accounting for 25%and 12%of cases,respectively.High-risk genotypes such as HPV 16 and HPV 52 showed low prevalence(<3%)but exhibited a slight upward trend in 2022.No significant age distribution differences were observed between HPVpositive and HPV-negative groups.The frequency of multiple HPV genotype infections increased slightly with age.Specific HPV genotypes showed unique associations with acne(HPV 56),allergic dermatitis(HPV 59),and amyloidosis(HPV 58).Conclusions:Low-risk HPV genotypes predominate in males with confirmed exposure.Older males appear more susceptible to multiple infections,and specific genotypes are associated with distinct diseases,supporting the need for male-targeted HPV vaccination and surveillance programs. 展开更多
关键词 Guangdong Province collecting analyzing clinical laboratory data MALE HPV genotypes disease prevalence China epidemiological studies SHENZHEN
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