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浏览/检索结果: 共30条，第1-10条 帮助

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Boosting Multi-modal Ocular Recognition via Spatial Feature Reconstruction and Unsupervised Image Quality Estimation 期刊论文  OAI收割
Machine Intelligence Research, 2024, 卷号: 21, 期号: 1, 页码: 197-214
作者:  Zihui Yan;  Yunlong Wang;  Kunbo Zhang;  Zhenan Sun;  Lingxiao He
  |  收藏  |  浏览/下载：7/0  |  提交时间：2024/04/23
Application of improved fuzzy comprehensive evaluation method in eutrophication assessment for tributary bays in the Three Gorges Reservoir, China 期刊论文  OAI收割
WATER ENVIRONMENT RESEARCH, 2020, 页码: 9
作者:  Chen, Zhaoming;  Shi, Mingquan;  Zou, Jinsong
  |  收藏  |  浏览/下载：36/0  |  提交时间：2021/02/24
Expression of the high molecular weight glutenin 1Ay gene from Triticum urartu in barley 期刊论文  OAI收割
TRANSGENIC RESEARCH, 2019, 卷号: 28, 期号: 2
作者:  Yang, Qiang;  Li, Siyu;  Li, Xiaoyu;  Ma, Jian;  Wang, Jirui
  |  收藏  |  浏览/下载：89/0  |  提交时间：2019/11/26
Chitooligosaccharide promotes immune organ development in broiler chickens and reduces serum lipid levels 期刊论文  OAI收割
HISTOLOGY AND HISTOPATHOLOGY, 2017, 卷号: 32, 期号: 9, 页码: 951-961
作者:  Li, SH;  Jin, EH;  Qiao, EM;  Wu, GZ;  Li, K
  |  收藏  |  浏览/下载：18/0  |  提交时间：2018/08/30
Discussion on strategy of grain quality improvement for super high yielding japonica rice in Northeast China 期刊论文  OAI收割
JOURNAL OF INTEGRATIVE AGRICULTURE, 2017, 卷号: 16, 期号: 5, 页码: 1075-1083
作者:  Mao Ting;  Li Xu;  Jiang Shukun;  Tang Liang;  Wang Jiayu
  |  收藏  |  浏览/下载：18/0  |  提交时间：2021/02/02
Optimum harvest maturity for Leymus chinensis seed 期刊论文  OAI收割
BIOLOGY OPEN, 2016, 卷号: 5, 期号: 6, 页码: 720-725
作者:  Lin, Jixiang;  Wang, Yingnan;  Qi, Mingming;  Li, Xiaoyu;  Yang, Chunxue
  |  收藏  |  浏览/下载：29/0  |  提交时间：2019/06/04
Ozone effects on wheat grain quality - A summary 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2015, 卷号: 197, 期号: 1, 页码: 203-213
作者:  Broberg, Malin C.;  Feng, Zhaozhong;  Xin, Yue;  Pleijel, Hakan
收藏  |  浏览/下载：30/0  |  提交时间：2016/03/03
A review of environmental characteristics and effects of low-molecular weight organic acids in the surface ecosystem 期刊论文  OAI收割
Journal of Environmental Sciences, 2014, 卷号: 26, 期号: 5, 页码: 935-954
Min Xiao; Fengchang Wu
收藏  |  浏览/下载：23/0  |  提交时间：2016/01/11
Combining AHP with GIS in synthetic evaluation of environmental suitability for living in China's 35 major cities SCI/SSCI论文  OAI收割
2012
作者:  Xu Y.;  Xu Y.
收藏  |  浏览/下载：27/0  |  提交时间：2014/12/24
Design of motion compensation mechanism of satellite remote sensing camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Gu S.; Yan Y.; Xu K.; Jin G.
收藏  |  浏览/下载：48/0  |  提交时间：2013/03/25
With the development of aerospace remote sensing technology  the ground resolution of remote sensing camera enhances continuously. Since there is relative motion between camera and ground target when taking pictures  the target image recorded in recording media is moved and blurred. In order to enhance the imaging quality and resolution of the camera  the image motion had to be compensated. In order to abate the effect of image motion to image quality of space camera and improve the resolution of the camera  the compensation method of image motion to space camera is researched. First  the reason of producing drift angle and adjustment principle are analyzed in this paper. This paper introduce the composition and transmission principle of image motion compensation mechanism. Second  the system adopts 80C31 as controller of drift angle  and adopts stepping motor for actuators  and adopts absolute photoelectric encoder as the drift Angle measuring element. Then the control mathematical model of the image motion compensation mechanism are deduced  and it achieve the closed-loop control of the drift angle position. At the last  this paper analyses the transmission precision of the mechanism. Through the experiment  we measured the actual precision of the image motion compensation mechanism  and compared with the theoretical analysis. There are two major contributions in this paper. First  the traditional image motion compensation mechanism is big volume and quality heavy. This has not fit for the development trend of space camera miniaturization and lightweight. But if reduce the volume and quality of mechanism  it will bring adverse effects for the precision and stiffness of mechanism. For this problem  This paper designed a image motion compensation that have some advantages such as small size  light weight at the same time  high precision  stiffness and so on. This image motion compensation can be applicable to the small optics cameras with high resolution. Second  the traditional mechanism control need to corrected  fitting and iterative for the control formula of mechanism. Only in this way  we can get the optimal control mathematical model. This paper has high precision of the control formula derived. It can achieve the high precision control without fitting  It also simplify the difficulty of control mathematical model establishment. This paper designed the range of adjusting of image motion compensation mechanism between -5 +5. Based on choosing-5  -4  -3  -2  -1  0  +1  +2  +3  +4  +4 as the expectation value of the imaginary drift angle  we get ten groups of the fact data in adjusting drift angle measured. The test results show that the precision of the drift angle control system can be achieved in 1. It can meet the system requirements that the precision of the control system is less than 3'  and it can achieve the high-precision image motion compensation. 2011 SPIE.