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长春光学精密机械与物... [2]
兰州理工大学 [1]
计算技术研究所 [1]
新疆生态与地理研究所 [1]
武汉大学 [1]
内容类型
会议论文 [3]
期刊论文 [3]
发表日期
2018 [1]
2013 [2]
2010 [1]
2009 [2]
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RGB-D joint modelling with scene geometric information for indoor semantic segmentation
期刊论文
MULTIMEDIA TOOLS AND APPLICATIONS, 2018, 卷号: 77, 期号: 17, 页码: 22475-22488
作者:
Liu, Hong
;
Wu, Wenshan
;
Wang, Xiangdong
;
Qian, Yueliang
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浏览/下载:26/0
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提交时间:2019/12/10
RGB-D
Gravity direction
Semantic segmentation
CRF
Structural design of primary mirror subassembly for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Xu H.
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浏览/下载:46/0
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提交时间:2013/03/25
In order to design a large aperture primary mirror with the diameter of 1150 mm
the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail
including material selection
diameter-thickness ratio
the number of the support points
location selection and lightweight structure
etc. A novel space mirror structure system was put forward
and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications
Switzerland.
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
Li Z.
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浏览/下载:27/0
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提交时间:2013/03/25
Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness
strength and thermal dimensional stability
some factors such as support scheme
materials selection
lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge
influences of gravity
assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively
the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz
which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications
Switzerland.
Variability of gravity wave occurrence frequency and propagation direction in the upper mesosphere observed by the OH imager in Northern Colorado
期刊论文
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2010, 卷号: 72, 期号: 5-6
作者:
Dou, XK
;
Li, T
;
Tang, YH
;
Yue, J
;
Nakamura, T
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浏览/下载:2/0
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提交时间:2019/12/05
Gravity waves
Upper mesosphere
Propagation direction
OH imager
The dynamic fluid pressure of reinforced concrete rectangular liquid-storage tanks with elastic walls
期刊论文
Gongcheng Lixue/Engineering Mechanics, 2009, 卷号: 26, 期号: 6, 页码: 82-88
作者:
Cheng, Xuan-Sheng
;
Du, Yong-Feng
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浏览/下载:6/0
  |  
提交时间:2020/11/14
Application programs
Chemical industry
Concrete construction
Earthquake engineering
Earthquakes
Gasoline
Gravitation
Gravity waves
Liquid sloshing
MATLAB
Petroleum industry
Proven reserves
Rigid structures
Sewers
Tanks (containers)
Water supply
Bi-direction
Dynamic fluids
Engineering applications
Liquid storage tanks
Liquid structures
Seismic response analysis
Velocity potential function
Water supply and drainages
Regional economic differences of Xinjiang based on gravity theory
会议论文
Proceedings - International Conference on Management and Service Science, MASS, Wuhan, China, 2009
Yaxuan
;
Liu1
;
2
;
Xiaolei
;
Zhang1
;
Jun
;
Lei1
;
Lei
;
Zhu1
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浏览/下载:15/0
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提交时间:2011/08/23
Economic development - Geo-statistics - Gravity centers - Gravity theory - Longitudinal direction - Numeric indicators - Spatial mean - Spatial visualization - Xinjiang
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