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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序提交时间升序提交时间降序题名升序题名降序作者升序作者降序 A Novel Extreme Learning Machine-Based Classification Algorithm for Uncertain Data 会议论文 作者:  Zhang, Xianchao;  Sun, Daoyuan;  Li, Yuangang;  Liu, Han;  Liang, Wenxin 收藏  |  浏览/下载：2/0  |  提交时间：2019/08/22 Extreme learning machine  Uncertain data  Classification   Label-free protein detection using terahertz time-domain spectroscopy 会议论文 Chongqing, China, October 10, 2016 - October 12, 2016 作者:  Han, Xiaohui;  Yan, Shihan;  Wei, Dongshan;  Cui, Hong-Liang;  Du, Chunlei 收藏  |  浏览/下载：15/0  |  提交时间：2018/03/16 A Laboratory Study for Relative Stability of the Check-dam System in Loess Plateau, China 会议论文 PROCEEDINGS OF THE 2ND INTERNATIONAL YELLOW RIVER FORUM ON KEEPING HEALTHY LIFE OF THE RIVER, VOL VI, 2nd International Yellow River Forum, Zhengzhou, PEOPLES R CHINA, Web of Science Xu Xiangzhou; Zhang Hongwu; Peng Yang; Zhang Ouyang 收藏  |  浏览/下载：5/0  |  提交时间：2017/06/15 Loess Plateau  check - dam  relative stability  scale down model experiment  simulation  GULLY EROSION  MODELS  Ecology  Environmental Sciences  Water Resources   Fast determination of total ginsenosides content in Ginseng powder by near infrared reflectance spectroscopy (EI CONFERENCE) 会议论文 ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China Chen H.-C.; Chen X.-D.; Lu Y.-J.; Cao Z.-Q. 收藏  |  浏览/下载：16/0  |  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.