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Improvement, Comparison, and Application of Field Measurement Methods for Grassland Vegetation Fractional Coverage被引量：8
《Journal of Integrative Plant Biology》2005年第9期1074-1083,共10页Xiao-Bing LI Yun-Hao CHEN Hua YANG Yun-Xia ZHANG 
国家自然科学基金，教育部霍英东教育基金
As one of the important vegetation parameters, vegetation fractional coverage （VFC） is more difficult to measure accurately among a good many parameters of plant communities. The temperate typical steppe in the nort...
关键词：color space transformation digital camera field measurement GRASSLAND vegetationfractional coverage. 
Cellular Genetic Algorithms for Optimizing the Area Covering of Wireless Sensor Networks被引量：4
《Chinese Journal of Electronics》2011年第2期352-356,共5页LI Xunbo WANG Zhenlin 
To maximize the network coverage and prolong the lifetime of the network, an optimization for the Wireless sensor network （WSN） coverage is proposed, which is combined the principle of Cellular automata （CA） with ...
关键词：Wireless sensor network （WSN） Cellular genetic algorithm （CGA） Network coverage. 
人工绿洲外围荒漠植被及其群落外貌特征被引量：15
《干旱区地理》2005年第1期107-112,共6页王梅 潘存德 楚光明 王兵 李冬梅 吴飞 
国家"十五"科技攻关课题(2004BA606A-10;2002BA517A-07)
根据2002年调查取得的3796块样地资料,采用定性和定量相结合的方法,对克拉玛依农业综合开发区外围西南和西北两个研究区的荒漠植被及其群落基本类型、群落盖度及其数量分布、群落外貌及其土壤剖面特征等方面进行了研究。结果表明:①克...
关键词：植被盖度 群落外貌 白梭梭 分布面积 样地 荒漠 土壤剖面 西南 农业综合开发区 等级 
Application of ERS-1 scatterometer data to studying land surfaces ──Distributive characteristic of backscattering coefficient over China land surfaces被引量：1
《Chinese Science Bulletin》1998年第23期1950-1955,共6页WANG Xiangyun 1, WANG Chao 2, GUO Huadong 2 and SHI Yangshen 1 1. Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2. Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China 
TheauthorsthanktheESAforprovidingtheERS_1WSCdatabyProjectA0 2
ERS 1 WSC data were obtained by international cooperation. The distributive characteristics of radar backscattering coefficient image of China land surface are analyzed and the research results are presented. The capa...
关键词：ERS 1 WSC radar BACKSCATTERING coefficient land surfaces coverage. 
Study on simulation of earth-fissures development and prediction based on GIS被引量：4
《Science China Earth Sciences》2001年第1期77-84,共8页武强 董东林 武雄 姜振泉 隋旺华 钱增江 傅耀军 余建芳 张伟 
Earth-fissure in Linfen city is dominated by many factors. Everyfactor is analyzed in detail and each coverage of them is established. After that, reciprocal relationship between them is determined by using AHP method...
关键词：GEOGRAPHIC INFORMATION system  earth-fissure hazards  AHP method  coverage. 
A NEW PROBABILISTIC APPROACH FOR ESTIMATING FAULT DETECTION PROBABILITY
《Journal of Electronics(China)》1994年第4期309-314,共6页丁瑾 胡健栋 
Supported by the National Science Foundation of China;the Young Teacher Foundation of the Ministry of Posts and Telecommunications of China
A new approach to calculate fault detection probabilities is presented. Fault-free simulation is used in the approach. The quantities of controllability and observability are defined as probabilities of controlling an...
关键词：PROBABILISTIC estimation CONTROLLABILITY OBSERVABILITY FAULT detection PROBABILITY FAULT coverage. 
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