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	Improved Horvitz-Thompson estimator in survey sampling 期刊论文 OAI收割 SURVEY METHODOLOGY, 2019, 卷号: 45, 期号: 1, 页码: 165-184 作者: Zong, Xianpeng; Zhu, Rong; Zou, Guohua \| 收藏 \| 浏览/下载：40/0 \| 提交时间：2020/01/10 Horvitz-Thompson estimator Inverse probability weighting Hard-threshold Robustness Unequal probability sampling Sampling without/with replacement Ratio estimator
	An improved destripe noises method for TDI-CCD images (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China 作者: He B. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 The new destriping method using lifting wavelet transform by means of the improved threshold function is presented in this letter. It can overcome the deficiency of the hard and soft threshold function. As compared with the known threshold functions the quality of the denoised images using the improved threshold function is much better. The results based on several image quality indexes present that the destriped images are not only visually more plausible but also suitable for analysis. Also it is reasonable in computer time and storage space to use the lifting wavelet transform. 2011 IEEE.
	Destriping of TDI-CCD remote sensing image (EI CONFERENCE) 会议论文 OAI收割 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China 作者: He B. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 Based on the characteristic of striping noise in remote sensing images a new destriping technique for the improved threshold function using lifting wavelet transform is presented in this letter. It can overcome the shortcoming of the hard threshold function and soft threshold function. The lifting wavelet transform is easily realized. Also it is inexpensive in computer time and storage space compared with the traditional wavelet transform. We also compare the improved threshold function with some traditional threshold functions both by visual inspection and by appropriate indexes of quality of the denoised images. Evaluations of the results based on several image quality indexes indicate that image quality has been improved after destriping. The destriped images are not only visually more plausible but also suitable for computerized analysis and it did better than the existed ones. 2010 IEEE.
	The effect of N/Si ratio on the a-SiiH/SiNx interface of a-SirH/SiNx TFT (EI CONFERENCE) 会议论文 OAI收割 Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China Liu J. e.; Gao W.; Liao Y.; Jing H.; Fu G. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 The threshold voltage of a-Si: H/SiNx TFT will shift under long time gate bias stress it is mostly leaded by charge trapping in gate insulator and defect creation in semiconductor. And it is hard to be applied in AMOLED for TFT because of its threshold voltage shift. In allusion to the phenomenon of charge trapping a series of SiNx insulating films in different N/Si(0. 87 -1.68) ratio were deposited by PECVD in this paper controlling different flow ratio of source gas SiH4 and NH3 and a great deal of tests (ellipsometer infrared absorption (FTIR) and Electron Dispersion Spectrum (EDS) test ) were done on these samples. Based on these SiNx insulators three different capacitance samples in MIS structure were done degraded experiments and C-V tests on these samples were done. The C-V curve shift of capacitance which contained SiNx with slightly N-rich(N/Si is bigger slightly than 1. 33) was not evident before and after degradation this result indicated that the defect density of this type SiN x was smaller and could restrain charge chapping in the interface of a-Si:H/SiNx effectively. So that as gate insulator of TFT SiN x with slightly N-rich could decrease the threshold voltage shift of TFT and enhance its stability effectively.
	Creep deformation characteristics of discontinuously reinforced aluminium-matrix composites 期刊论文 OAI收割 Composites Science and Technology, 2001, 卷号: 61, 期号: 5, 页码: 771-786 Z. Y. Ma; S. C. Tjong 收藏 \| 浏览/下载：17/0 \| 提交时间：2012/04/14 metal-matrix composites (MMCs) particle-reinforced composites creep mechanical properties stress exponent high-temperature creep solid-solution alloys sic-al composites in-situ al2o3 dislocation climb particle reinforcement threshold stresses steady-state hard particles subgrain size
	Creep behaviour of aluminium strengthened by fine aluminium carbide particles and reinforced by silicon carbide particulates - DS Al-SiC/Al4C3 composites 期刊论文 OAI收割 Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 1999, 卷号: 268, 期号: 1-2, 页码: 236-245 S. J. Zhu; L. M. Peng; Q. Zhou; Z. Y. Ma; K. Kucharova; J. Cadek 收藏 \| 浏览/下载：20/0 \| 提交时间：2012/04/14 DS SiC AlC composites creep threshold stress stress exponent diffusion control high-temperature creep metal-matrix composites dislocation climb hard particles al composite alloy model