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A new approach for characterizing concrete deterioration under sulfate attack and its application: Insights from elastic modulus variation using indentation technology 期刊论文  OAI收割
JOURNAL OF BUILDING ENGINEERING, 2024, 卷号: 98, 页码: 15
作者:  
  |  收藏  |  浏览/下载:2/0  |  提交时间:2025/06/27
ISRM Suggested Method for In Situ Acoustic Emission Monitoring of the Fracturing Process in Rock Masses 期刊论文  OAI收割
ROCK MECHANICS AND ROCK ENGINEERING, 2019, 卷号: 52, 期号: 5, 页码: 1395-1414
作者:  
Feng, Xia-Ting;  Young, R. P.;  Reyes-Montes, J. M.;  Aydan, OEmer;  Ishida, Tsuyoshi
  |  收藏  |  浏览/下载:19/0  |  提交时间:2020/04/08
ISRM Suggested Method for In Situ Microseismic Monitoring of the Fracturing Process in Rock Masses 期刊论文  OAI收割
ROCK MECHANICS AND ROCK ENGINEERING, 2016, 卷号: 49, 期号: 1, 页码: 343-369
作者:  
Feng, Guang-Liang;  Xiao, Ya-Xun;  Feng, Xia-Ting;  Hudson, John A.;  Chen, Bing-Rui
  |  收藏  |  浏览/下载:26/0  |  提交时间:2018/06/05
An auto-focus algorithm of fast search based on combining rough and fine adjustment (EI CONFERENCE) 会议论文  OAI收割
3rd international Conference on Manufacturing Science and Engineering, ICMSE 2012, March 27, 2012 - March 29, 2012, Xiamen, China
作者:  
Zhang S.;  Zhang Y.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
A coarse and fine combined fast search and auto-focusing algorithm was suggested in this paper. This method can automatically search and find the focal plane by evaluating the image definition. The Krisch operator based edge energy function was used as the big-step coarse focusing  and then the wavelet transform based image definition evaluation function  which is sensitivity to the variation in image definition  was used to realize the small-step fine focusing in a narrow range. The un-uniform sampling function of the focusing area selection used in this method greatly reduces the workload and the required time for the data processing. The experimental results indicate that this algorithm can satisfy the requirement of the optical measure equipment for the image focusing. (2012) Trans Tech Publications.  
Fast determination of total ginsenosides content in Ginseng powder by near infrared reflectance spectroscopy (EI CONFERENCE) 会议论文  OAI收割
ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Chen X.-D.;  Chen X.-D.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
Near infrared (NIR) reflectance spectroscopy was used to develop a fast determination method for total ginsenosides in Ginseng (Panax Ginseng) powder. The spectra were analyzed with multiplicative signal correction (MSC) correlation method. The best correlative spectra region with the total ginsenosides content was 1660 nm1880 nm and 2230nm-2380 nm. The NIR calibration models of ginsenosides were built with multiple linear regression (MLR)  principle component regression (PCR) and partial least squares (PLS) regression respectively. The results showed that the calibration model built with PLS combined with MSC and the optimal spectrum region was the best one. The correlation coefficient and the root mean square error of correction validation (RMSEC) of the best calibration model were 0.98 and 0.15% respectively. The optimal spectrum region for calibration was 1204nm-2014nm. The result suggested that using NIR to rapidly determinate the total ginsenosides content in ginseng powder were feasible.  
Detecting of multi-target in sea or sky background based on wavelet energy (EI CONFERENCE) 会议论文  OAI收割
Advanced Sensor Systems and Applications II, November 8, 2004 - November 12, 2004, Beijing, China
作者:  
Liu G.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
The technology of multi-target tracking is always detecting small targets in complex background. According to the frequency characteristic of nature background and small target  a method of detecting targets based on wavelet energy is suggested. The energy of targets in horizontal and vertical direction outclass that of background  or we can say  the gray degree of targets outclass that of background. Then through selecting adaptive region-value  targets and background can be divided. By the method of classifying  the figure centers of every target can be calculated. According to the figure centers of every target in several neighboring frames  the position and velocity of every target in next frame can be estimated by Kalman filter. Experiment results have shown that small targets in sea or sky nature background can be detected by this method  and they can be tracking.  
Time-evolution of a trapped Bose-Einstein condensation in a quantum cavity (EI CONFERENCE) 会议论文  OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Wang C.;  Zhang L.;  Zhang L.
收藏  |  浏览/下载:18/0  |  提交时间:2013/03/25