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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [2]
地质与地球物理研究所 [1]
心理研究所 [1]
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OAI收割 [4]
内容类型
会议论文 [2]
期刊论文 [2]
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2023 [1]
2019 [1]
2009 [1]
2007 [1]
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Comparing monetary gain and loss in the monetary incentive delay task: EEG evidence
期刊论文
OAI收割
PSYCHOPHYSIOLOGY, 2023, 页码: 20
作者:
Zhang, Yan
;
Li, Qiuhao
;
Rong, Yachao
;
Hu, Li
;
Mueller, Hermann J. J.
  |  
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2023/10/09
ERPs
gain
loss
monetary incentive delay
time-frequency analyses
Evidence for diurnal periodicity of earthquakes from midnight to daybreak
期刊论文
OAI收割
NATIONAL SCIENCE REVIEW, 2019, 卷号: 6, 期号: 5, 页码: 1016-1023
作者:
Hao, Jinlai
;
Zhang, Jinhai
;
Yao, Zhenxing
  |  
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2020/05/18
periodicity of earthquakes
time-frequency analyses
ocean tide
earth tide
Local Mean Time
Contrast research on interpolation and subpixel imaging in CCD geometric superresolution reconstruction (EI CONFERENCE)
会议论文
OAI收割
1st Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, PrimeAsia 2009, November 19, 2009 - November 21, 2009, Shanghai, China
作者:
Xu Y.-S.
;
Yang S.-W.
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
In order to enhance the resolution of Charge Coupled Device (CCD) pixel with the pixel dimension and focal length of optical system unchanged
the problem of CCD geometric superresolution is educed. The problem is discussed in terms of software and hardware. In software
the bicubic interpolation is introduced
while in hardware
the subpixel imaging method is utilized. The subpixel imaging method integrates two uniform linear CCDs staggered by half dimension of pixel in one device. In operation
the line frequency is doubled. At last
the collected data is interweaved to synthesize a high resolution image. The two methods
bicubic interpolation and subpixel imaging
are simulated with Matlab7.0.1. The qualitative and quantitative analyses are given. The simulated results of lanczos and cubic spline interpolation methods are given simultaneously to show the performance of interpolation. The simulation result shows that the result images quality becomes better in both methods
but compared with bicubic interpolation method
the synthesized image PSNR gained from sub-pixel imaging is averagely enhanced by 2.1682dB
while the elapsed time is reduced to be about one forth. The subpixel imaging method could significantly mitigate the image blur introduced by undersample. 2009 IEEE.
Mid-frequency surface error test with a Foucault apparatus (EI CONFERENCE)
会议论文
OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China
作者:
Li J.
;
Li J.
;
Xuan B.
;
Li J.
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
Testing of mid-frequency surface error is of the first importance for fast optics
especially for large aperture aspherics. Foucault test plays a dominant role for surface error inspection before the digital interferometer age
but it seems to have faded out these days because no quantitative results turn out. However
an interferometer with high resolution CCDs is either unavailable or unaccessible in the process of manufacture. As its advantages are realized and recognized for the second time
Foucault test is going back to the stage again. A new theory of calculating the contrast of the shadow pattern of Foucault test is put forward in this paper and some modifications are discussed upon the analyses of the limitation of traditional Foucault apparatus. A paraboloidal mirror was fabricated and tested by the modified Foucault apparatus whose effect has been proved to be great. The methods of controlling mid-frequency error are described in the other paper at this conference- "Multi-mode combine manufacturing technology for large aperture aspheric mirrors"1.