中国科学院机构知识库网格系统: 检索

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	不同外形粗糙元覆盖沙床面防风蚀效益的风洞模拟实验学位论文 OAI收割新疆乌鲁木齐: 中国科学院大学, 2017 作者: 樊瑞静 \| 收藏 \| 浏览/下载：32/0 \| 提交时间：2018/12/28 粗糙元几何外形风蚀率风洞实验 Geometric shape Roughness elements Wind erosion Wind tunnel experiment
	A quantitative morphometric comparison of cockpit and doline karst landforms SCI/SSCI论文 OAI收割 2014 作者: Ge Y. 收藏 \| 浏览/下载：48/0 \| 提交时间：2014/12/24 cockpit doline contours morphometric characteristics topographic map karst digital elevation models geometric signature southern china terrain geomorphometry elements guilin tower maps dems
	Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文 OAI收割作者: Lin G.-Y. 收藏 \| 浏览/下载：40/0 \| 提交时间：2013/03/25 Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution high spectral resolution and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating which make the anterior Wadsworth condition fulfilling each wavelength is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.
	A DFT study on equilibrium geometries, stabilities, and electronic properties of small bimetallic Na-doped Au (n) (n=1-9) clusters: comparison with pure gold clusters 期刊论文 OAI收割 Journal of Molecular Modeling, 2012, 卷号: 18, 期号: 1, 页码: 329-338 Y. F. Li; X. Y. Kuang; A. J. Mao; Y. Li; Y. R. Zhao 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/02/05 Au-Na cluster Density functional theory Geometric configuration Ionization potentials ionization-potentials co oxidation sodium clusters silver photoionization molecules chemistry elements cs
	反射折射二次曲线性质的研究及其应用学位论文 OAI收割工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2011 作者: 段慧仙收藏 \| 浏览/下载：63/0 \| 提交时间：2015/09/02 中心反射折射摄像机摄像机标定中心反射折射二次曲线几何元对极图像点 Central catadioptric camera camera calibration central catadioptric quadratics geometric elements antipodal image points
	On the convergence rate of a parallel nonoverlapping domain decomposition method 期刊论文 OAI收割 SCIENCE IN CHINA SERIES A-MATHEMATICS, 2008, 卷号: 51, 期号: 8, 页码: 1461-1478 作者: Qin LiZhen; Shi ZhongCi; Xu XueJun \| 收藏 \| 浏览/下载：12/0 \| 提交时间：2018/07/30 finite elements nonoverlapping domain decomposition convergence rate geometric optimal
	On a parallel Robin-type nonoverlapping domain decomposition method 期刊论文 OAI收割 SIAM JOURNAL ON NUMERICAL ANALYSIS, 2006, 卷号: 44, 期号: 6, 页码: 2539-2558 作者: Qin, Lizhen; Xu, Xuejun \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2018/07/30 nonconforming finite elements nonoverlapping domain decomposition convergence rate geometric convergence
	Field and wind-tunnel studies of aerodynamic roughness length 期刊论文 iSwitch采集 BOUNDARY-LAYER METEOROLOGY, 2002, 卷号: 104, 期号: 1, 页码: 151-163 作者: Xue, X; Wang, T; Sun, QW; Zhang, WM 收藏 \| 浏览/下载：35/0 \| 提交时间：2019/10/08 geometric parameter Gobi desert roughness elements roughness length