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浏览/检索结果: 共12条，第1-10条 帮助

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Is China at the tipping point? Reconsidering environment-economy nexus 期刊论文  OAI收割
JOURNAL OF CLEANER PRODUCTION, 2020, 卷号: 276, 页码: 9
作者:  Li, Fei;  Feitelson, Eran;  Li, Yu
  |  收藏  |  浏览/下载：100/0  |  提交时间：2021/03/16
Is China at the tipping point? Reconsidering environment-economy nexus 期刊论文  OAI收割
JOURNAL OF CLEANER PRODUCTION, 2020, 卷号: 276, 页码: 9
作者:  Li, Fei;  Feitelson, Eran;  Li, Yu
  |  收藏  |  浏览/下载：11/0  |  提交时间：2021/03/16
A New Dynamic Direct Shear Testing Device on Rock Joints 期刊论文  OAI收割
ROCK MECHANICS AND ROCK ENGINEERING, 2020, 页码: 12
作者:  Qi, Shengwen;  Zheng, Bowen;  Wu, Faquan;  Huang, Xiaolin;  Guo, Songfeng
  |  收藏  |  浏览/下载：98/0  |  提交时间：2020/08/03
Regional development and carbon emissions in China 期刊论文  OAI收割
ENERGY ECONOMICS, 2019, 卷号: 81, 页码: 25-36
作者:  Zheng, Jiali;  Mi, Zhifu;  Coffman, D'Maris;  Milcheva, Stanimira;  Shan, Yuli
  |  收藏  |  浏览/下载：60/0  |  提交时间：2020/01/10
China's Energy Consumption in the New Normal 期刊论文  OAI收割
EARTHS FUTURE, 2018, 卷号: 6, 期号: 7, 页码: 1007-1016
作者:  Mi, Zhifu;  Zheng, Jiali;  Meng, Jing;  Shan, Yuli;  Zheng, Heran
  |  收藏  |  浏览/下载：64/0  |  提交时间：2018/09/08
Strategic adjustment of land use policy under the economic transformation 期刊论文  OAI收割
LAND USE POLICY, 2018, 卷号: 74, 页码: 5-14
作者:  Liu, Yansui;  Li, Jintao;  Yang, Yuanyuan
  |  收藏  |  浏览/下载：31/0  |  提交时间：2019/05/30
Strategic adjustment of land use policy under the economic transformation 期刊论文  OAI收割
LAND USE POLICY, 2018, 卷号: 74, 页码: 5-14
作者:  Liu, Yansui;  Li, Jintao;  Yang, Yuanyuan
  |  收藏  |  浏览/下载：20/0  |  提交时间：2019/05/30
Strategic adjustment of land use policy under the economic transformation 期刊论文  OAI收割
LAND USE POLICY, 2018, 卷号: 74, 页码: 5-14
作者:  Liu, Yansui;  Li, Jintao;  Yang, Yuanyuan
  |  收藏  |  浏览/下载：10/0  |  提交时间：2019/05/30
The research on statistical properties of TDI-CCD imaging noise (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Gu Y.-Y.; Shen X.-H.; He G.-X.
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25
TDI-CCD can improve the sensitivity of space camera without any degradation of spatial resolution which is widely used in aerospace imaging devices. The article describes the basic working principle and application characteristics of TDI-CCD devices  analyses the composition of TDI-CCD imaging noise  and propose a new method to analyze TDI-CCD imaging noise with statistical probability distribution. In order to estimate the distribution of gray values affect by noise we introduced the concept of skewness and kurtosis. We design an experiment using constant illumination light source  take image with TDI-CCD working at different stage such as stage 16  stage 32  stage 48  stage 64 and stage 96  analyse the characteristics of image noise with the method we proposed  experimental results show that the gray values approximately meet normal distribution in large sample cases. 2011 SPIE.  
The effect on tolerance distributing of an off-axis three mirror anastigmatic optical system with wavefront coding technology (EI CONFERENCE) 会议论文  OAI收割
Optical System Alignment and Tolerancing II, August 10, 2008 - August 11, 2008, San Diego, CA, United states
作者:  Yan F.;  Zhang X.-J.;  Yan F.
收藏  |  浏览/下载：35/0  |  提交时间：2013/03/25
The wavefront coding technology is known as a system-level technology which can extend the depth of focus of optical system by innovative optical design and image restoration. This technology can control misfocus related aberrations including misfocus  astigmatism  and Petzval curvature  temperature-related misfocus in digital imaging systems. It can also help optical system tolerate more residual error in optical manufacturing and alignment besides misfocus. The brief introduction of wavefront coding technology and the wavefront coded TMA system under research is presented respectively in part 1 and part 2. The "MTF similarity" is defined to describe the relationship among MTF at different position or different fields in the third part. It is also shown in this part that the MTF similarity of wavefront coded system is much higher than the normal system within a large range. In part 4 comparison between the origin system and the new system with wavefront coding technology is provided after multiple errors are introduced  from which it can be observed that the system with wavefront coding technology can tolerate much bigger error than origin system. The error tolerance is re-distributed according to a new criterion based on MTF similarity. If the MTF similarity is less than a certain value  it can be regarded that the system can tolerate the residual error. The new error tolerance is displayed and it is shown that the wavefront coding technology can also loosen the error distributing besides extended the depth of focus.