نتایج جستجو برای: 100101
تعداد نتایج: 181 فیلتر نتایج به سال:
Australian Research Council Centre of Excellence in Plant Cell Walls, School of BioSciences, University of Melbourne, Parkville, Victoria 3010, Australia (K.L.J., A.M.C., A.L., A.B., M.S.D.); Departments of Biological Sciences and Medicine, University of Alberta, Edmonton, Alberta, Canada, and BGI-Shenzhen, Bei Shan Industrial Zone, Yantian District, Shenzhen, China (G.K.-S.W., E.J.C.); Florida...
Juan Li,a,b,1 Jiafu Jiang,a,1 Qian Qian,c,1 Yunyuan Xu,a Cui Zhang,a,b Jun Xiao,a,b Cheng Du,a,b Wei Luo,a Guoxing Zou,c Mingluan Chen,d Yunqing Huang,d Yuqi Feng,d Zhukuan Cheng,e Ming Yuan,f and Kang Chong a,g,2 a Research Center for Molecular and Developmental Biology, Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, B...
In the supervised classification process of remotely sensed imagery, the quantity of samples is one of the important factors affecting the accuracy of the image classification as well as the keys used to evaluate the image classification. In general, the samples are acquired on basis of prior knowledge, experience and higher resolution images. With the same size of samples and the same sampling...
This paper presents a regionalized vulnerability curve-building approach to vulnerability and risk assessment of wheat subjected to drought that uses the Environmental Policy Integrated Climate (EPIC) model and statistical analysis. We defined wheat vulnerability as the degree to which a wheat production system is likely to experience yield loss due to a perturbation or drought hazard. Wheat vu...
a College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China b U.S. Geological Survey (USGS), Earth Resources Observation and Science (EROS) Center, Sioux Falls, South Dakota 57198, USA c Geographic Information Science Center of Excellence, South Dakota State University, Brookings, South Dakota 57007, USA d KeyLaboratoryof EcosystemNetworkObservationandM...
An adaptive method is employed to speed up computation of high accuracy surface modeling (HASM), for which an error indicator and an error estimator are developed. Root mean-square error (RMSE) is used as the error estimator that is formulated as a function of gully density and grid cell size. The error indicator is developed on the basis of error surfaces for different spatial resolutions, whi...
1 FOREST BIOMASS MAPPING FROM LIDAR AND RADAR SYNERGIES 2 Guoqing Sun, K. Jon Ranson, Z. Guo, Z. Zhang, P. Montesano and D. Kimes 3 4 Dept. of Geography, University of Maryland, College Park, MD USA, [email protected] 5 Biospheric Sciences Branch, NASA’s Goddard Space Flight Center, Greenbelt, MD USA 6 State Key Laboratory of Remote Sensing, Institute of Remote Sensing Applications, Chinese...
4 Per Alström, Keith N. Barnes, Urban Olsson, F. Keith Barker, Paulette Bloomer, 5 Aleem Ahmed Khan, Masood Ahmed Qureshi, Alban Guillaumet, Pierre-André Crochet, 6 Peter G. Ryan 7 8 a Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese 9 Academy of Sciences, Chaoyang District, Beijing, 100101, P. R. China 10 b Swedish Species Information Centre, Swedish Univer...
Both the time series analysis method and hydrological modeling approach are integrated to analyze the streamflow response to climate variability and human activities in the Bai River basin, northern China using data from 1986 to 1998 in this study. Also, the quantification and separation of effects from climate variability and human activities is investigated. First, the Fu formula based on Bud...
Correspondence to: Dr. Xiaofei Wang, Department of Cardiology, the 306th Hospital of Chinese PLA, Beijing 100101, China. Email: [email protected] Objective Several previous studies have shown androgens deficiency in men with CHF, and 2 studies on the prognostic significance of serum levels of androgens in CHF patients have yielded conflicting results. The aim of this study was to examine the rel...
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