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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Analyzing land cover changes influenced by topographic factors based on technologies of RS and GIS - A case study of Yuli county of Xinjiang 会议论文 3rd International Symposium on Artificial Intelligence, JSAI-isAI 2011, Takamatsu, Japan, December 1, 2011 - November 2, 2012 作者:  Wang, Qianfeng;  Zhou, Kefa;  Sun, Li;  Qin, Yanfang;  Li, Guangyu 收藏  |  浏览/下载：6/0  |  提交时间：2017/01/18 Landforms  Artificial intelligence  Economics  Forestry  Geographic information systems  Image reconstruction  Maps  Remote sensing  Research  Spatial distribution  Change trends  Construction land  Data source  Eco-environments  GIS (geographic information system)  High elevation  Land cover  Land-cover change  Quantitative research  Remote sensing images  RS and GIS  Slope factors  Social economy  Socio-economic data  Steeper slopes  Topographic data  topographic factors  Topographic map  Waterbodies  Xinjiang  Yuli county   Study on land use/cover change in Sichuan province based on RS and GIS 会议论文 ChongQing, China, Dec. 25, 2009 to Dec. 27, 2009 作者:  Wang, Feng-Xia;  Zhou, Wan-Cun 收藏  |  浏览/下载：12/0  |  提交时间：2018/02/24 Sichuan Province  Land Use/cover Change  Remote Sensing  Geographical Information System  Dynamic Change   Study on Land Use/Cover Change in Sichuan Province Based on RS and GIS 会议论文 Chongqing, DEC 25-27, 2009 作者:  Wang Feng-xia;  Zhou Wan-cun 收藏  |  浏览/下载：0/0  |  提交时间：2020/07/10 Sichuan Province  Land Use/Cover Change  Remote Sensing  Geographical Information System  Dynamic Change   Design of a scene simulator in land-based aerospace lab with the man-made light source system based on quantum theory (EI CONFERENCE) 会议论文 Optoelectronic Devices and Integration II, November 12, 2007 - November 15, 2007, Beijing, China Zhu X.; Yi W.; Fang W.; Yi H. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 The paper presents a method with the technique of combination filtering of spectrum and the technique of DSP control for the simulation and recognition of the spontaneously lightening object and stellar map in the universe. The magnitude and the spectrum of a star can be simulated in a wide dynamic range. We established the mathematical models of the Vega's visible light spectrum and luminous flux density. Tungsten-halogen lamp as a light source is used to fit the linear light of the spontaneously lightening object in the universe. Through the experiment  it shows that the more sub-channels there are while filtering spectrum in the visible spectrum  and the more degrees the variable neutral density filters and the narrow-band attenuators have  more close to the actual spectrum the simulated spectrum is. It is proved that using the PID technique is beneficial to the output of the accurate and steady radiation from the light sources. The experiment shows that the using of this method can get perfect result in fitting and simulating the spectrum  magnitude and the stellar map of the spontaneously lightening object . The analysis of the consistent result and the experimental error is also discussed in detail in this paper.   1 km grid spatial data platform for regional man-land system 会议论文 作者:  Wang Y. 收藏  |  浏览/下载：12/0  |  提交时间：2012/06/30 gridded data  man-land system  GIS   西藏自治区草地退化及其发展趋势分析 会议论文 青藏高原东缘环境演化与森林生态学术研讨会, 四川成都, 2001-8-26～31 作者:  刘淑珍;  范建容;  周麟 收藏  |  浏览/下载：56/0  |  提交时间：2015/08/10 草地退化  西藏自治区  防治对策