中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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Resistance-Based Connectivity Model to Construct Corridors of the Przewalski's Gazelle (Procapra Przewalskii) in Fragmented Landscape 期刊论文  OAI收割
SUSTAINABILITY, 2021, 卷号: 13, 期号: 4
作者:  
Zhang, Jingjie;  Jiang, Feng;  Cai, Zhenyuan;  Dai, Yunchuan;  Liu, Daoxin
  |  收藏  |  浏览/下载:33/0  |  提交时间:2021/11/18
Urban ventilation network model: A case study of the core zone of capital function in Beijing metropolitan area 期刊论文  OAI收割
JOURNAL OF CLEANER PRODUCTION, 2017, 卷号: 168, 页码: 526-535
作者:  
Qiao, Zhi;  Xu, Xinliang;  Wu, Feng;  Luo, Wen;  Wang, Fang
  |  收藏  |  浏览/下载:35/0  |  提交时间:2019/09/25
Urban ventilation network model: A case study of the core zone of capital function in Beijing metropolitan area 期刊论文  OAI收割
JOURNAL OF CLEANER PRODUCTION, 2017, 卷号: 168, 页码: 526-535
作者:  
Qiao, Zhi;  Xu, Xinliang;  Wu, Feng;  Luo, Wen;  Wang, Fang
  |  收藏  |  浏览/下载:18/0  |  提交时间:2019/09/25
Urban ventilation network model: A case study of the core zone of capital function in Beijing metropolitan area 期刊论文  OAI收割
JOURNAL OF CLEANER PRODUCTION, 2017, 卷号: 168, 页码: 526-535
作者:  
Qiao, Zhi;  Xu, Xinliang;  Wu, Feng;  Luo, Wen;  Wang, Fang
  |  收藏  |  浏览/下载:23/0  |  提交时间:2019/09/25
An Iterative BRDF/NDVI Inversion Algorithm Based on A Posteriori Variance Estimation of Observation Errors 期刊论文  OAI收割
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2016, 卷号: 54, 期号: 11, 页码: 6481-6496
作者:  
Zeng, Yelu;  Li, Jing;  Liu, Qinhuo;  Huete, Alfredo R.;  Xu, Baodong
收藏  |  浏览/下载:41/0  |  提交时间:2016/12/08
Landscape network approach to assess ecological impacts of road projects on biological conservation 期刊论文  OAI收割
CHINESE GEOGRAPHICAL SCIENCE, 2014, 卷号: 24, 期号: 1, 页码: 5-14
Liu Shiliang; Deng Li; Chen Liding; Li Junran; Dong Shikui; Zhao Haidi
收藏  |  浏览/下载:18/0  |  提交时间:2015/03/23
Proposed Conservation Landscape for Giant Pandas in the Minshan Mountains, China 期刊论文  OAI收割
CONSERVATION BIOLOGY, 2008, 卷号: 22, 期号: 5, 页码: 1144-1153
Shen, Guozhen; Feng, Chaoyang; Xie, Zongqiang; Ouyang, Zhiyun; Li, Junqing; Pascal, Marty
收藏  |  浏览/下载:16/0  |  提交时间:2015/08/20
Annular sub-aperture stitching interferometry for testing of large asphreical surfaces (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China
作者:  
Zheng L.-G.
收藏  |  浏览/下载:76/0  |  提交时间:2013/03/25
Annular subaperture stitching interferometric technology can test large-aperture  and the PV and RMS of residual error of the full aperture phase distribution is 0.027 and 0.0023  high numerical aperture aspheric surfaces with high resolution  the relative error of PV and RMS is -0.53% and -0.31%  respectively. The results conclude that this splicing model and algorithm are accurate and feasible. So it provides another quantitive measurement for test aspheric surfaces especially for large aperture aspheres besides null-compensation.  low cost and high efficiency without auxiliary null optics. In this paper  the basic principle and theory of the stitching method are introduced  the reasonable mathematical model and effective splicing algorithm are established based on simultaneous least-squares method and Zernike polynomial fitting. The translation errors are eliminated from each subaperture through the synthetical optimization stitching mode  it keeps the error from transmitting and accumulating. The numerical simulations have been carried on by this method. As results  the surface map of the full aperture after stitching is consistent to the input surface map  the difference of PV error and RMS error between them is -0.0074 and -0.00052 ( is 632.8nm)  respectively