检索结果-南通市图书馆

An approach to extracting surface supply relationships between glaciers and lakes on the Tibetan Plateau

International Journal of Digital Earth 2018年第11期11卷 1151-1165页

作者： Bei-Bei Ai Cheng-Zhi Qin qinghua ye A-Xing Zhu Graham Cogley State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchCASBeijingPeople’s Republic of China College of Resources and Environment University of Chinese Academy of SciencesBeijingPeople’s Republic of China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application and School of Geography Nanjing Normal UniversityNanjingPeople’s Republic of China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchCASBeijingPeople’s Republic of China Department of Geography University of Wisconsin-MadisonMadisonWIUSA Key Laboratory of Virtual Geographic Environment Ministry of EducationNanjing Normal UniversityNanjingPeople’s Republic of China Department of Geography Trent University PeterboroughCanada

Surface supply relationships between glaciers and lakes are needed to analyze and understand hydrological processes at regional and global ***,these supply relationships still cannot be extracted efficiently by existing *** paper proposes an automatic and efficient approach to extracting surface supply relationships between glaciers and lakes based on meltwater flow *** approach includes two stages:(1)identifying direct connections between objects(*** and lakes)based on flow direction derived from digital terrain analysis on a gridded digital elevation model(DEM)and(2)deriving all(or user-specified)kinds of surface supply relationships based on graph *** computation-intensive steps in this approach have been parallelized;and all steps in the proposed approach have been integrated as an automatic *** for the Tibetan Plateau show that given outline data for glaciers and lakes and the Shuttle Radar Topography Mission DEM,the proposed approach can automatically derive diverse surface supply relationships under userspecified restrictions on the attributes of the supply *** parallelization in the approach effectively improves the computing *** proposed approach could also be applied to developing a detailed fundamental dataset of supply relationships between glaciers and lakes for other region or period.

关键词： Glaciers and lakes surface supply relationship digital terrain analysis parallel computing Tibetan Plateau

来源：

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

Geospatial-temporal analysis of land-use changes in the yellow River Delta during the last 40 years

引用

Science China Earth Sciences 2004年第11期47卷 1008-1024页

作者： ye qinghua LIU Gaohuan TIAN Guoliang CHEN Shenliang HUANG Chong CHEN Shupeng LIU Qingshen CHANG Jun SHI Yanan State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications(IRSA)Chinese Academy of Science(CAS)Beijing 100101China Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200062China Institute of Tibetan Plateau Research(ITPR) CASBeijing 100085China

Comprehensive study on land-use change of spatial pattern and temporal process is the key component in land use/land cover changes (LUCC) study nowadays. According to the theories and methods of Geo-information Tupu (Carto-methodology in Geo-information, CMGI) for geospatial and temporal analysis and integration models of spatial pattern and temporal processes in GIS, the paper puts forward Tupu methodology of land-use change and names the basic synthetic unit of spatial-temporal information Tupu unit. Tupu unit is the synthetic unit for geospatial-temporal analysis, which is synthesized by “space·attribute·process”features and composed of relatively homogeneous geographic unit and temporal unit. Based on the spatial features of 4 stages of land-use change in 1956, 1984, 1991, and 1996, a series of Tupu on land-use change in the yellow River Delta (YRD) are created and studied in the paper, which includes 3 temporal units of spatial-temporal Tupu, process Tupu of land-use changes during the last 40 years, and reconstructions of a series of “arisen”Tupu, “arisen”process Tupu and pattern Tupu on land-use changes in the last 40 years by remapping tables of a reclassifying system. There are 3 methods of Tupu analysis on land-use change that are used to disclose change processes of land-use spatial conversion in YRD, such as spatial query and statistics, order of Tupu units by area and land-use conversion matrixes. In order to reveal the spatial pattern of land-use change processes, we analyze spatial-temporal changes of each Tupu above in various temporal units and spatial difference of pattern Tupu in the last 40 years by dynamic Tupu units. Tupu analysis on regional land-use is a promising trial on the comprehensive research of “spatial pattern of dynamic process”and “temporal process of spatial pattern”in LUCC research. The geo-information Tupu methodology would be a powerful and efficient tool on integrated studies of spatial pattern and temporal process in geoscien

关键词： eo-information Tupu spatial-temporal analysis the yellow River Delta land-use changes Tupu Unit

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Shifts in water-level variation of Namco in the central Tibetan Plateau from ICESat and Cryo Sat-2 altimetry and station observations

引用

Science Bulletin 2015年第21期60卷 1287-1297页

作者： Chunqiao Song qinghua ye Xiao Cheng Institute of Tibetan Plateau Research (ITP) Chinese Academy of Sciences Department of Geography University of California State Key Laboratory of Remote Sensing Science College of Global Change and Earth System Science Beijing Normal University

The dynamics of high-altitude inland lakes in the Tibetan Plateau are sensitive indicators of climate change. Due to the remoteness and hard access, satellite altimetry becomes an effective approach to obtaining largescale and temporally continuous information of lake-level changes. The CryoSat-2 altimetry is expected to solve the current problem that earlier radar altimeters are only practical for monitoring large water bodies, while ICESat laser altimetry is available only for the period 2003-2009. In this study, the comparison of CryoSat-2 altimetry for Namco with in situ water-level data suggests a high cor- relation coefficient of 0.71 （P 〈 0.01）, with the mean error of -0.12 m and root-mean-square error of 0.18 m. Further, the combination of ICESat and CryoSat-2 altimetry data and in situ lake-level observations reveals a rapid water- level rise of 0.24 4- 0.04 m/year during 2003-2008 and then a slightly decreasing trend of -0.09 4- 0.04 m/year during 2009-2013. This study suggests that the CryoSat-2 altimetry has the potential of sustaining the fine observa- tions on Tibetan lakes, following the ICESat mission. Besides, the examination of four key climatic variables （temperature, precipitation, potential evapotranspiration, and relative humidity） during 1990-2013 indicates that the wetting climate over Namco Basin stagnated or even reversed around 2006, which may be tightly related to the slowing lake growth.

关键词： Lake Satellite altimetry CryoSat-2ICESat Tibetan Plateau - Climate change

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A broadband high resolution direction of arrival estimation algorithm based on conditional wavenumber spectral density

引用

Chinese Journal of Acoustics 2020年第4期39卷 482-497页

作者： LI Xuemin HUANG Haining LI Yu ye qinghua ZHANG Yangfan Institute of Acoustics Chinese Academy of SciencesBeijing 100190 Key Laboratory of Aduanced Underuwater Information Chinese Academy of SciencesBeijing 100190 University of Chinese Academg of Sciences Beijing 100049

A broadband high resolution direction of arrival(DOA) estimation algorithm named the conditional wavenumber spectral density based(CWSD-based) is proposed in this paper aimed at the problem of large error and high complexity of wideband high resolution *** super-resolution DOA estimation,minimal main-lobe width,ultra-low side-lobe and high precision target resolution performance can be obtained after transforming the array signals to f-k space and using the characteristic of wideband signal power distributed as a line on the conditional wavenumber spectral ***,there are no DOA pre-estimates of the incident signals and the number of sources to be required in this *** simulations indicate that the theoretical resolution of the algorithm is inversely proportional to the highest processing frequency,the estimated mean square error is about 0.1°,and also is robust to array shape distortion and has high computing *** data on the sea indicates that the proposed algorithm,whose performance is superior to CBF and MVDR in the aspects of resolution,weak target detection,non-target direction noise suppression and robustness et al.,can achieve ultra-low sidelobe high resolution DOA in the actual ocean.

关键词： resolution estimation algorithm

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Spatial-temporal characteristics in landscape evolution of the yellow River Delta during 1855- 2000 and a way out for the yellow River estuary

引用

Chinese Science Bulletin 2006年第B11期51卷 197-209页

作者： ye qinghua CHEN Shenliang CHEN Qi HUANG Chong TIAN Guoliang CHEN Shupeng SHI Yanan LIU Qingshen LIU Gaohuan State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications (IRSA) Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Estuarine and Coastal Research East China Normal University Shanghai 200062 China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China Department of Environmental Science Policy and ManagementUniversity of California Berkeley Berkeley 94720 USA

基于风景生态学 andGee 信息 Tupu 的图形、量的方法论，这篇论文学习风景黄河三角洲(YRD ) 的空间时间的进化特征，它被黄河(年) 尾部隧道的周期的物理秋千在 1855-2000 期间建立。根据关于 YRDand 年尾部隧道的空间时间的进化的研究... 详细信息

基于风景生态学 andGee 信息 Tupu 的图形、量的方法论，这篇论文学习风景黄河三角洲(YRD ) 的空间时间的进化特征，它被黄河(年) 尾部隧道的周期的物理秋千在 1855-2000 期间建立。根据关于 YRDand 年尾部隧道的空间时间的进化的研究，我们断定 Qingshuigou 隧道到达了它的限制，一条新流动隧道迟早多年应该被建立。它建议年隧道的移动应该接受它在以前的隧道之中通过消沉流动的自然规则并且能被人造的努力执行。论文在河口在 YR 流动为淤泥的高内容的处理外面讨论这些问题和交替的方法。

关键词：黄河三角洲黄河河口景观物理演化进程水文学

来源：

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

上海复合极端风暴洪水淹没模拟

引用

水科学进展 2019年第4期30卷 546-555页

作者：王璐阳张敏温家洪种振涛 ye qinghua KE Qian 上海师范大学环境与地理科学学院上海200234 华东师范大学河口海岸学国家重点实验室上海200062 Deltares Boussinesqweg 12629 HV Delftthe Netherlands Department of Hydraulic Engineering Delft University of TechnologyStevinweg 12628 CN Delftthe Netherlands

河口三角洲和沿海城市面临着台风、暴雨、高潮位和上游下泄洪水叠加的“四碰头”复合极端风暴洪水的严重威胁。构建了大气-海洋-陆地相耦合的一体化数值模拟系统,实现了上海市“风”“暴”“潮”“洪”多灾种复合情景的极端洪涝淹没模拟... 详细信息

河口三角洲和沿海城市面临着台风、暴雨、高潮位和上游下泄洪水叠加的“四碰头”复合极端风暴洪水的严重威胁。构建了大气-海洋-陆地相耦合的一体化数值模拟系统,实现了上海市“风”“暴”“潮”“洪”多灾种复合情景的极端洪涝淹没模拟,并验证了耦合方法的有效性,为复合风暴洪水的一体化模拟提供了一套可行的数值模拟方法。在9711台风影响下,模拟了1998年堤防升级改造后淹没面积(水深>0.2m)比改造前减少了62%,表明沿海沿江堤防设施建设在上海市防台防汛中起着关键性的作用。复合极端风暴洪水的有效模拟可为财产保险和未来市政规划提供参考。

关键词：复合风暴洪水数值模拟模型耦合上海

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Quantum Dot Nanobeads-Labelled Lateral Flow Immunoassay Strip for Rapid and Sensitive Detection of Salmonella Typhimurium Based on Strand Displacement Loop-Mediated Isothermal Amplification

引用

Engineering 2022年第12期19卷 62-70页

作者： Yuting Shang Shuzhen Cai qinghua ye Qingping Wu Yanna Shao Xiaoying Qu Xinran Xiang Baoqing Zhou Yu Ding Moutong Chen Liang Xue Honghui Zhu Jumei Zhang Guangdong Provincial Key Laboratory of Microbial Safety and Health&State Key Laboratory of Applied Microbiology Southern China&Institute of Microbiology Guangdong Academy of SciencesGuangzhou 510070China State Key Laboratory of Food Science and Technology&National Engineering Research Center for Functional Foods&Synergetic Innovation Center of Food Safety&Joint International Research Laboratory on Food Safety School of Food Science and TechnologyJiangnan UniversityWuxi 214122China

Rapid,sensitive,point-of-care detection of pathogenic bacteria is important for food *** this study,we developed a novel quantum dot nanobeads-labelled lateral flow immunoassay strip(QBs-labelled LFIAS)combined with strand displacement loop-mediated isothermal amplification(SD-LAMP)for quantitative Salmonella Typhimurium(ST)*** dot nanobeads(QBs)served as fluorescence reporters,providing good detection *** customizable strand displacement(SD)probe was used in LAMP to improve the specificity of the method and prevent by-product *** was based on a sandwich immunoassay.A fluorescence strip reader measured the fluorescence intensity(FI)of the test(T)line and control(C)*** linear detection range of the strip was 10^(2)–10^(8) colony forming units(CFU)·mL^(-1).The visual limit of detection was 10^(3) CFU·mL^(-1),indicating that the system was ten-fold more sensitive than AuNPs-labelled test *** specificity was analyzed in accordance with agarose gel outputs of polymerase chain reaction(PCR)and *** detected ST in foods with an acceptable recovery of 85%–110%.The method is rapid,simple,almost equipment-free,and suitable for bacterial detection in foods and for clinical diagnosis.

关键词： Salmonella Typhimurium Quantum dot nanobeads Lateral flow immunoassay strip Loop-mediated isothermal amplification Strand displacement probe

来源：

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

Glacier in the upstream Manla Reservoir in the Nianchu River Basin,Tibet:shrinkage and impacts

引用

Research in Cold and Arid Regions 2011年第2期3卷 110-118页

作者： ZhiGuo Li TanDong Yao LiDe Tian qinghua ye Bamhart Laura Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China Department of Environment and Planning Shangqiu Normal University Shangqiu Henan 476000 China

Glaciers in the upstream Mania Reservoir in the Nianchu River Basin are crucial for agriculture and hydropower in the ＂One River and Two Streams＂ area. Rising temperature has caused widespread retreat of glaciers on the Tibetan Plateau during the last few decades. In this study, glacier variations under climate change in the Nianchu River Basin are quantified and their influence are evaluated by analyzing 1980 aerial topographic maps, 1990 Landsat TM, 2000 Landsat ETM＋, and 2005 CBERS remotely sensed images. It is found that from 1980 to 2005, the debris-free glacier area shrank by 7.3% （13.42 kin2）. Glacier shrinkage will have a positive effect on agriculture, hydropower and eco-environment in the near future. However, because the large number of small glaciers （〈2 km2） will rapidly retreat and disappear in future years, melt water will decrease, ultimately resulting in a long term water shortage. Glacial lakes exhibited rapid expansion due to accelerating glacier retreat during 19802005, increasing the possibility of glacial lake outbtwst floods.

关键词： glacier climate change Manla Reservoir Nianchu River Basin remote sensing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

益肾壮骨活血方联合针刀疗法治疗髌骨骨性关节炎临床观察

引用

中国中医药现代远程教育 2025年第1期23卷 128-130页

作者：叶青华张一沛南昌市洪都中医院软伤科江西南昌330000

目的探讨髌骨骨性关节炎患者采用益肾壮骨活血方联合针刀疗法的临床效果。方法从南昌市洪都中医院2021年6月—2022年6月收治的髌骨骨性关节炎患者中抽取70例作为研究对象,使用随机数字表法将其分为对照组和观察组,每组35例。对照组和观... 详细信息

目的探讨髌骨骨性关节炎患者采用益肾壮骨活血方联合针刀疗法的临床效果。方法从南昌市洪都中医院2021年6月—2022年6月收治的髌骨骨性关节炎患者中抽取70例作为研究对象,使用随机数字表法将其分为对照组和观察组,每组35例。对照组和观察组的治疗方法分别为常规西医治疗、益肾壮骨活血方联合针刀治疗,对比两组治疗前后的炎性因子水平和西安大略和麦克马斯特大学骨关节炎指数(WOMAC)评分。结果治疗后,观察组的白细胞介素-6(IL-6)、白细胞介素-1β(IL-1β)水平均较对照组低(P<0.05),WOMAC评分较对照组低(P<0.05)。结论髌骨骨性关节炎患者采用益肾壮骨活血方与针刀联合治疗效果较显著,不仅能有效减轻炎症反应,还能改善关节功能,临床可进一步推广。

关键词：骨痹髌骨骨性关节炎益肾壮骨活血方针刀疗法关节功能

来源：

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

Acceleration of Glacier Mass Loss after 2013 at the ***(Qomolangma)

引用

Journal of Geodesy and Geoinformation Science 2020年第4期3卷 60-69页

作者： Gang LI Hui LIN qinghua ye Liming JIANG Andrew HOOPER Yinyi LIN Shool of Geospatial Engineering and Science Sun Yat-Sen UniversityGuangzhou 510275China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China School of Geography and Environment Jiangxi Normal UniversityNanchang 330022China Institute of Tibetan Plateau Research Chinese Academic of ScienceBeijing 100100China Institute of Geodesy and Geophysics Chinese Academy of ScienceWuhan 430077China COMET School of Earth and EnvironmentUniversity of LeedsLeeds LS29JT United Kingdom Institute of Space and Earth Information Science The Chinese University of Hong KongHong Kong 999077China

Satellite geodesy is capable of observing glacier height changes and most recent studies focus on the decadal scale due to limitations of data acquisition and *** at the ***(Qomolangma),locating at the central Himalaya,have been studied from the 1970s to *** we obtained TerraSAR-X/TanDEM-X images observed in two epochs,a group around 2013 and another in *** with SRTM observed in 2000,we derived geodetic glacier mass balance between 2000 and 2013 and 2013 and *** proposed two InSAR procedures for deriving the second period,which yields with basically identical results of geodetic glacier mass *** differencing between DEMs derived by TerraSAR-X/TanDEM-X shows better precision than that between TerraSAR-X/TanDEM-X formed DEM and SRTM,and it can capable of providing geodetic glacier mass balance at a sub-decadal *** at the ***(Qomolangma)and its surroundings present obvious speeding up in mass loss rates before and after 2013 for both the Chinese and the Nepalese *** previous obtained spatial heterogeneous pattern for glacier downwasting between 2000 and 2013 generally kept the same after *** with lacustrine terminus present the most rapid lost rates.

关键词： Mt.Everest(Qomolangma) geodetic glacier mass balance TerraSAR-X/TanDEM-X bistatic D-InSAR

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：