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Highly selective monitoring of in-source fragmentation sapogenin product ions in positive mode enabling group-target ginsenosides profiling and simultaneous identification of seven Panax herbal medicines 期刊论文  OAI收割
JOURNAL OF CHROMATOGRAPHY A, 2020, 卷号: 1618, 页码: 11
作者:  
Zhang, Chun-xia;  Wang, Xiao-yan;  Lin, Zhao-zhou;  Wang, Hong-da;  Qian, Yue-xin
  |  收藏  |  浏览/下载:28/0  |  提交时间:2020/07/01
A real-time two-dimensional correlation speed measurement based on image (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
作者:  
Yu L.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
In order to implement two-dimensional moving object's non-contact and real-time speed measurement  in this paper  wc proposed a new method which was based on the characteristic of FPGA and a real-time two-dimensional correlation speed measurement was proposed on image processing using high speed CMOS shown in figure 1. Experimental installation was shown in figure 2  a cardboard with images which was fixed in electric control movement device was moving to simulate moving object  the CMOS image sensor gathered image signals of the cardboard and the image signals was output to FPGA after a serials pretreatment such as binaryzation etc. Logical operation insteaded mathematical operation on FPGA to implement two frames image's cross-correlation operations as the formula (10) in this paper  and finally calculate the two-dimensional velocity. Through experiment result of table 1 we drawn an conclusion the accurarcy of the method in this paper was less than 1 pixel and the method can be used at a certain speed ranges of two-dimensional  real-time speed measurement. 2010 IEEE.  
Ground-based measurement of the space object temperature (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Wu Y.-H.;  Wang J.-L.;  Wang J.-L.
收藏  |  浏览/下载:71/0  |  提交时间:2013/03/25
Multi-band IR data of the space object can be used in the fields of object identification and space surveillance. The radiation characteristics of the object can be obtained by analyzing these data. These characteristics include temperature  area  emissivity  absorptivity  reflectivity  and temporal trends. The infrared radiation temperature of the space object is an important characteristic from which the object's working state in orbit can be judged. We apply the method of measuring the spectral distribution of the object and fit the data to the Planck formula to determine the temperature. In order to improve the precision of measuring temperature on the space object  we optimize the centric wavelength and the bandwidth effectively. Also  we use a simple program to implement temperature measurement. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Grating interferometry method for torsion measurement (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu W.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
Method of grating interferometry was presented for torsion angle measurement  moire fringe generated by two gratings is used in a new field  it breaks through moire fringe's routine application. Measurement principle is described  torsion angle can be gotten by the tilt angle or the width of moire fringe. Different from moire fringe's characteristic information extracting methods in traditional measurement fields  fringe-tilt method and fringe-width method were put forward to extract moire fringe's characteristic information. Fringe-tilt method is on the basis of moire fringe's tilt to acquire torsion angle  uniform formula was built aiming at all positions of two gratings in the coordinates  fringe-width method is on the basis of moire fringe's width to acquire torsion angle  three key problems are given about fringe-width method. Thick  middle and thin moire fringe were collected in experiments and processed by two methods  fringe-width method's result shows that magnitude of boat torsion error is satisfied with that of theoretical precision analysis  and the change rule of torsion error is also same to that of theoretical analysis  the thicker fringe is  the higher precision is  when fringe width arrives to be 1695m  the precision is 1.7"  the thinner fringe is  the lower precision is  when fringe width arrives to be 734.7m  the precision is 6.7". In addition to these  the results of repeatability experiments  sensibility experiments are given. In a word  the measurement principle is right and the precision of fringe processing is also reliable.  
compositionality of fixpoint logic with chop 会议论文  OAI收割
2nd International Colloquium on Theoretical Aspects of Computing, Hanoi, VIETNAM, OCT 17-21,
Zhan NJ; Wu JZ
  |  收藏  |  浏览/下载:14/0  |  提交时间:2011/07/28