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Li Chunyu
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《Geoscience Frontiers》 2025年第4期I0006-I0006,共1页
Li Chunyu(1904-1988),born in the Weihui City,Henan Province.He graduated from the Department of Geology at Peking University in 1928 and received his doctoral degree from the University of Berlin,Germany in 1937.He wa... Li Chunyu(1904-1988),born in the Weihui City,Henan Province.He graduated from the Department of Geology at Peking University in 1928 and received his doctoral degree from the University of Berlin,Germany in 1937.He was elected as an Academician of the Chinese Academy of Sciences in 1955.Li Chunyu was a renowned Chinese geologist and tectonist.He made significant contributions to the regional geological surveys,geological mapping,and mineral exploration in areas such as the Qinling Mountains,Sichuan Basin,and the Qinghai-Tibetan Plateau.Notably,he was the first to discover mélange in China and emerged as the leading figure advocating for the study of plate tectonic theory in the country. 展开更多
关键词 regional geological surveysgeological mappingand geological mapping Qinling Mountains mineral exploration regional geological surveys TECTONICS Sichuan Basin GEOLOGY
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Robinson-Ursescu定理在Frechet空间中的形成
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作者 过榴晓 丘京辉 《江南大学学报(自然科学版)》 CAS 2005年第5期541-544,共4页
由局部凸F-范空间中闭凸集值映射的性质,推导出Frechet空间上集值映射的Robinson-Ursescu定理、开映照与闭图定理形式.
关键词 FRECHET空间 凸集值映射 Robinson-Ursescu定理 开映照与闭图定理
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浅论促进地理信息产业健康发展的法治保障
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作者 王保立 《地理信息世界》 2013年第2期16-19,共4页
推进测绘地理信息依法行政对于促进地理信息产业健康发展具有保驾护航的重要作用。本文概述了我国测绘地理信息市场的发展形势,分析了制约地理信息产业健康发展所面临的主要问题和挑战,提出了规范市场秩序、优化发展环境的重点任务和促... 推进测绘地理信息依法行政对于促进地理信息产业健康发展具有保驾护航的重要作用。本文概述了我国测绘地理信息市场的发展形势,分析了制约地理信息产业健康发展所面临的主要问题和挑战,提出了规范市场秩序、优化发展环境的重点任务和促进地理信息产业做大做强的保障服务措施。 展开更多
关键词 测绘地理信息 依法行政 行业管理
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