中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Mindfulness-Based Movement Intervention to Improve Sleep Quality: A Meta-Analysis and Moderator Analysis of Randomized Clinical Trials 期刊论文  OAI收割
Int J Environ Res Public Health, 2022, 卷号: 19, 期号: 16, 页码: 18
作者:  
Jiayi Yang;  Yan Du;  Haoran Shen;  Shujie Ren;  Zhiyuan Liu
  |  收藏  |  浏览/下载:46/0  |  提交时间:2022/11/08
Controlled movement of kinesin-driven microtubule along a directional track 期刊论文  OAI收割
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2018, 卷号: 550, 页码: 186-192
作者:  
Xia, Jiarui;  Sun, Bingbing;  Yang, Yang;  Li, Jieling;  Jia, Yi
  |  收藏  |  浏览/下载:41/0  |  提交时间:2019/04/09
Direction-Controlled Light-Driven Movement of Microribbons 期刊论文  OAI收割
ADVANCED MATERIALS, 2016, 卷号: 28, 期号: 38, 页码: 8538-8545
作者:  
Zhang, Yifan;  Peng, Cheng;  Cui, Bin;  Wang, Zhengfei;  Pang, Xibin
收藏  |  浏览/下载:35/0  |  提交时间:2017/01/11
A design on a control method of a new type of focal plane shutter (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Xue L.; Ming L.; Zheng L.-N.; Zhou J.-F.; Zhang H.-W.; Zhang J.-C.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
In order to ensure appropriate exposure time  and no exposure while electric charge is transferring after taking a photograph  it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx  so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle  structural design and control procedure about this new focal plane shutter. Under the control of DSP  the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled  but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement  long life span with more than 105 operating times  a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width)and the exposure error is less than 10%. With the CCD gain adjustment  the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras. 2010 IEEE.  
Narcissus analysis for cooled staring IR system (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
Narcissus can have a deleterious effect on image quality for cooled infrared imaging systems. Therefore  analysis of narcissus is important for designing both scanning and staring optics. Narcissus is generally assumed to be negligible in staring IR optical designs because the shading effects can be removed by calibration of the detector array data. However  the calibration usually decreases sensitiveness of the system and Narcissus variation may be noticeable for sensors when the conditions changes as follows: 1. warming and cooling the optical housing  2. zooming optical elements  3. movement of lenses for focus. In that case  it will result in shading and other image defects even after calibration. To minimize these effects  narcissus should be assessed and controlled during the design of staring array IR system. We provided a direct and fast method for analyzing the narcissus variation in the presence of software such as LightTools  TracePro and ASAP  and proposed the principles in optical design of staring IR systems to reduce narcissus. A cooled staring IR system with serious narcissus was estimated and reoptimized. Narcissus analysis of this IR system confirmed the efficiency of the analysis method.