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浏览/检索结果: 共9条,第1-9条 帮助

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Accurate volume measurement of road potholes based on 3d point clouds 会议论文  OAI收割
Osaka, Japan, 2020-05-19
作者:  
Xu, Mingming;  Zhou, Zuofeng;  Wu, Qingquan;  Huang, Huimin;  Du, Ying
  |  收藏  |  浏览/下载:55/0  |  提交时间:2020/08/21
Equilibrium thallium isotope fractionation and its constraint on Earth's late veneer 期刊论文  OAI收割
Acta Geochimica, 2019, 卷号: 38, 期号: 4, 页码: 459-471
作者:  
Tong Fang;Yun Liu
  |  收藏  |  浏览/下载:24/0  |  提交时间:2020/05/06
Equilibrium thallium isotope fractionation and its constraint on Earth’s late veneer 期刊论文  OAI收割
Acta Geochimica, 2019, 卷号: 38, 页码: 459–471
作者:  
Tong Fang;Yun Liu
  |  收藏  |  浏览/下载:20/0  |  提交时间:2020/09/21
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.  
An Improved Method Based on Shallow Ice Approximation to Calculate Ice Thickness along Flow-Line and Volume of Mountain Glaciers 期刊论文  iSwitch采集
JOURNAL OF EARTH SCIENCE, 2011, 卷号: 22, 期号: 4, 页码: 441-448
作者:  
Li, Huilin;  Li, Zhongqin;  Zhang, Mingjun;  Li, Wenfeng
收藏  |  浏览/下载:22/0  |  提交时间:2019/10/08
A strong coupled CFD-CSD method on computational aeroelastity (EI CONFERENCE) 会议论文  OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
Xi R.; Jia H.
收藏  |  浏览/下载:71/0  |  提交时间:2013/03/25
In this paper  a strong coupled CFD-CSD method is developed to simulate the aeroelastic phenomena. The CFD solver is based on the finite-volume algorithm for the Navier-Stokes equations on unstructured grid. The CSD solver solves the aeroelastic governing equations in the modal space. Their coupling is realized by a dual-time method. The spring-based smoothing method is adopted to deform and regenerate the aerodynamic grid. Two test cases are selected to validate the authors' method for static and dynamic aeroelastity .The results of the simulation for the static aeroelastic problems of a missile wing show that the Lift Coefficient and Drag Coefficient are severally 7% and 5% lower than those don't consider the elasticity of the wing. The results for the flutter boundary prediction of the AGARD 445.6 wing have been proved much closer to the experiment than using the DLM. This method can describe the effects of fluid viscosity more exactly for highly nonlinear transonic flight conditions. The calculation has proved reliable in the subsonic regime  but not accurate enough in the supersonic regime. 2011 IEEE.  
Characteristics of water exchange in the Luzon Strait during September 2006 CNKI期刊论文  OAI收割
2009
作者:  
Zhou H(周慧);  Nan F(南峰);  Shi MC(侍茂崇);  Zhou LM(周良明);  Guo PF(郭佩芳)
  |  收藏  |  浏览/下载:2/0  |  提交时间:2024/12/18
Characteristics of water exchange in the Luzon Strait during September 2006 期刊论文  OAI收割
CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY, 2009, 卷号: 27, 期号: 3, 页码: 650-657
作者:  
Zhou Hui;  Nan Feng;  Shi Maochong;  Zhou Liangming;  Guo Peifang
  |  收藏  |  浏览/下载:24/0  |  提交时间:2010/12/22
球-盘微动摩擦件磨损体积的测量与计算 期刊论文  OAI收割
摩擦学学报, 1995, 卷号: 15, 期号: 2, 页码: 145-151
作者:  
周惠娣;  阎逢元
收藏  |  浏览/下载:69/0  |  提交时间:2015/07/09