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浏览/检索结果: 共7条，第1-7条 帮助 限定条件 发表日期：2006    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 Medical X-ray coherent scatter images processing based on the MRF model (EI CONFERENCE) 会议论文 ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China Liu T.; Sun J.; Liu J.; Song J. 收藏  |  浏览/下载：9/0  |  提交时间：2013/03/25 X-ray coherent scatter imaging is a novel imaging technique. A clinical X-ray coherent scatter imaging equipment based on image processing method is introduced  adopting CR and IP plate instead of the diffractometers. The scatter images obtained are made of some circles with the same center. According to our equipment  it is vital to calculate the energy template to classify the different samples. However  it is difficult to separate them using the traditional threshold method due to noise and overlapped shadow. Markov Random Field (MRF) is employed to segment the scatter image  which takes spatial information into account to deal with the noise and overlapped shadow. The experiment results show our method is reasonable and feasible.   Abrupt sensor fault diagnosis based on wavelet network (EI CONFERENCE) 会议论文 2006 IEEE International Conference on Information Acquisition, ICIA 2006, August 20, 2006 - August 23, 2006, Weihai, Shandong, China Zhang H.; Chen T.; Li W. 收藏  |  浏览/下载：11/0  |  提交时间：2013/03/25 The possible faults of a sensor may be classified as abrupt (sudden) faults and incipient (slowly developing) faults. This paper focuses on the abrupt faults of a sensor. Due to the limited number of scales  a single wavelet amplitude map has not enough scales to describe all details of the signal. The sampling grid in the scale direction is rather sparse  Some of the fault information will be leaked under such sparse grid. To make up for the deficiency of scalar orthogonal wavelet transform in the application of abrupt fault diagnosis  multiwavelet packets transform was introduced into the field of abrupt fault diagnosis. The distribution differences of the signal energy on decomposed multiwavelet scales of the signal before and after the fault occurring are extracted as the fault feature and used as the input of multi-dimensional wavelet network. A new model-free diagnostic method for isolating abrupt sensor faults is developed based on a proposed algorithm of multi-dimensional wavelet network constructing. The method has been proved to be quite effective in the detection of sensor abrupt fault. 2006 IEEE.   Commissioning of HIRFL-CSR and its electron coolers 会议论文 作者:  Wang, Zhixue;  Lu, Wang;  Mao, Lijun;  Li, Jie;  Song, Mingtao 收藏  |  浏览/下载：13/0  |  提交时间：2018/08/20 Commissioning of HIRFL-CSR and its electron coolers 会议论文 作者:  Xia, Jiawen;  Yang, Xiaodong;  Parkhomchuk, Vasily;  Zhan, Wenlong;  Zhao, Hongwei 收藏  |  浏览/下载：13/0  |  提交时间：2018/08/20 Multi-objective conditioning of a SVAT model for heat and CO2 fluxes prediction 会议论文 Iahs Publication Mo X. G.; Liu S. X.; Lin Z. H.; Sun X. M.; Zhu Z. L. 收藏  |  浏览/下载：16/0  |  提交时间：2012/06/30 GLUE  parameter calibration  SVAT model  uncertainty  land-surface  sensitivity-analysis  coupled model  winter-wheat  photosynthesis  transpiration  energy  conductance  uncertainty  efficiency   The distribution of the ultra wide band electromagnetic field and the propagating behavior of the energy density 会议论文 Wuhan, PEOPLES R CHINA, JUN 04-09, 2006 作者:  Mao, Lifeng;  Wang, Xuben 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/13 The influence of installation conditions of heat meters on interior fluid field and flux mearsurement accuracy 会议论文 Conference on Global Chinese Scholars on Hydrodynamics, JUL 11-14, 2006 作者:  Du Guang-sheng;  Liu Li-ning;  Li Li;  Liu Zheng-gang;  Liu Yong-hui 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/31 heat meter  installation conditions  measuring effect  numerical  simulation