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浏览/检索结果: 共5条，第1-5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：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Error compensation of laser tracker in multi-station measurement 会议论文 Beijing, China, 2021-06-20 作者:  Wang, Ruiyan;  She, Wenji 收藏  |  浏览/下载：9/0  |  提交时间：2022/01/30 laser tracker  multi-station measurement  error compensation  coordinate calibration   Estimating fetal brain motion with total-variation-based magnetic resonance image registration 会议论文 WCICA 2016, 中国桂林 作者:  Luming Chen;  Hefang Zhang;  Shibin Wu;  Shaode Yu;  Yaoqin Xie 收藏  |  浏览/下载：15/0  |  提交时间：2017/01/15 Biofouling Estimation withLeast Squares Support Vector Machine 会议论文 ICIA 2016, 浙江宁波 作者:  Zhang Yanhui;  Liu Binbin;  Pan Zhongming 收藏  |  浏览/下载：12/0  |  提交时间：2017/01/15 Hybrid method to improve abundance estimation of hyperspectral mixture pixel 会议论文 作者:  Wu, Bo;  Zhao, Yindi 收藏  |  浏览/下载：2/0  |  提交时间：2019/11/26 total least square  hybrid model  abundance estimation  wavelet feature  accuracies   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.