SKEWNESS

作品数：77被引量：77H指数：4
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Numerical simulation of non-Gaussian wind load被引量：3
《Science China(Technological Sciences)》2012年第11期3057-3069,共13页YE JiHong DING JingHu LIU ChuanYan 
supported by the National Natural Science Fund for Distinguished Young Scholars (Grant No. 51125031)
Compared with Gaussian wind loads, there is a higher probability of strong suction fluctuations occurrence for non-Gaussian wind pressures. These instantaneous and intermittent fluctuations are the initial cause of lo...
关键词：non-Gaussian wind load power spectrum SKEWNESS KURTOSIS numerical simulation 
Synchronous estimation of DTM and fractional vegetation cover in forested area from airborne LIDAR height and intensity data被引量：10
《Science China(Technological Sciences)》2008年第S2期176-187,共12页BAO YunFei1,2,CAO ChunXiang1,ZHANG Hao1,CHEN ErXue3,HE QiSheng1,2,HUANG HuaBing1,LI ZengYuan3,LI XiaoWen1,4 & GONG Peng1 1 State Key Laboratory of Remote Sensing Science,jointly sponsored by the Institute for Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,China 2 Graduate University of the Chinese Academy of Sciences,Beijing 100049,China 3 Institute of Forest Resource Information Technique,the Chinese Academy of Forestry,Beijing 100091,China 4 Research Center for Remote Sensing and GIS,Department of Geography and Beijing Key Laboratory for Remote Sensing of Environment and Digital Sites,Beijing Normal University,Beijing 100875,China 
Supported by the National State Key Basic Research Project (Grant No.2007CB714404);the National Natural Science Foundation of China (Grant No.40871173);the State Key Laboratory of Remote Sensing Science,China (Grant No.03Q0030449);Key Science and Technology R&D Program of Qinghai Province (Grant No.2006-6-160-01)
We proposed a method to separate ground points and vegetation points from discrete return,small footprint airborne laser scanner data,called skewness change algorithm.The method,which makes use of intensity of laser s...
关键词：LIDAR INTENSITY SKEWNESS SYNCHRONOUS DTM fractional vegetation COVER 
On the joint distribution of surface slopes for the fourth order nonlinear random sea waves被引量：1
《Science China(Technological Sciences)》1999年第5期449-455,共7页张书文 孙孚 管长龙 
Project supported by the National Natural Science Foundation of China (Grant No. 49676274), Youth Science Foundation of Shandong Province and the Doctoral Program of Higher Education.
Based upon the nonlinear model of Longuet-Higgins the joint distribution of wave surface slopes is theoretically investigated. It is shown that in the fourth order approximation, the distribution is given by truncated...
关键词：NONLINEAR statistical distribution wave surface SLOPE KURTOSIS skewness. 
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