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Chinese Academy of Sciences Institutional Repositories Grid
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Description and Climate Simulation Performance of CAS-ESM Version 2 期刊论文  OAI收割
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS, 2020, 卷号: 12, 期号: 12, 页码: 35
作者:  
Zhang, He;  Zhang, Minghua;  Jin, Jiangbo;  Fei, Kece;  Ji, Duoying
  |  收藏  |  浏览/下载:67/0  |  提交时间:2021/12/01
Labile carbon retention compensates for CO2 released by priming in forest soils SCI/SSCI论文  OAI收割
2014
Qiao N.; Schaefer D.; Blagodatskaya E.; Zou X. M.; Xu X. L.; Kuzyakov Y.
收藏  |  浏览/下载:35/0  |  提交时间:2014/12/24
The Research of real time auto-recognition of the moire fringe (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
Wang M.-J.; Wu Z.-G.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity  high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black  the angle of the stripes is uniform  the width of the stripes is uniform  the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE)  the closer a series of data is  the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin  180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those  then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe  60 equal angles are divided in the neighborhood of the angle  then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe  we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn  and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise  an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe  and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest  the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method  the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method  and it can achieve with 15 ms  that satisfying the demand of real time. 2011 SPIE.  
A study on the effect of wheat row-structure on Microwave emissivity using field experiment data 会议论文  OAI收割
2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011,, Vancouver, BC, Canada, July 24, 2011 - July 29,2011
Li, Yunqing; Zhang, Lixin; Jiang, Lingmei; Chai, Linna; Zhang, Tao
收藏  |  浏览/下载:14/0  |  提交时间:2014/12/07
Measuring instrument for radial composite deviations of high-precision master gear (EI CONFERENCE) 会议论文  OAI收割
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
作者:  
Zhang Y.;  Wang L.;  Wang L.;  Wang L.
收藏  |  浏览/下载:37/0  |  提交时间:2013/03/25
During double flank rolling composite detection  the radial composite deviations of master gears has been existed and transferred to the measured gear by the primary harmonic curve. In order to improve measurement accuracy  a measuring instrument is developed for radial composite deviations of high-precision master gear in the paper. This instrument uses the structure of spring-suspend swing span to overcome the shortcomings of large rotation errors  low sensitivity  low resolution and large measuring force appearing in the traditional combination-type gear inspection instrument. Artificial intelligence technology is used to improve the efficiency and accuracy of this instrument. The result is that the measuring apparatus is able to meet the requirement and improve efficiency through the measuring experiments on master gears of precision grade 2 with modulus 2 mm and 3 mm  respectively. 2010 SPIE.  
Aeolian dust experiment on climate impact: An overview of Japan-China joint project ADEC 期刊论文  OAI收割
GLOBAL AND PLANETARY CHANGE, 2006, 卷号: 52, 期号: 1-4, 页码: 142-172
Mikami; Shi; Uno; Yabuki; Iwasaka; Yasui; Aoki; Tanaka; Kurosaki; Masuda; Uchiyama; Matsuki; Sakai; Takemi; Nakawo; Seino; Ishizuka; Satake; Fujita; Hara; Kai; Kanayama; Hayashi; Du; Kanai; Yamada; Zhang; Shen; Zhou; Abe; Nagai; Tsutsumi; Chiba; Suzuki; M.; G. Y.; I.; S.; Y.; M.; T.; T. Y.; Y.; K.; A.; A.; T.; T.; M.; N.; M.; S.; K.; Y.; K.; S.; M.; M.; Y.; Y.; X. Y.; Z.; H.; O.; T.; Y.; M.; J.
收藏  |  浏览/下载:204/0  |  提交时间:2011/08/19