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	The Characteristics of Summer Descending Sporadic E Layer Observed With the Ionosondes in the China Region 期刊论文 OAI收割 JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2021, 卷号: 126, 期号: 3, 页码: 9 作者: Qiu, Lihui; Zuo, Xiaomin; Yu, Tao; Sun, Yangyi; Liu, Huixin \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2021/10/19 convergence node downward movement sporadic E layer wind shear
	Research on the identification for a nonlinear system (EI CONFERENCE) 会议论文 OAI收割 International Conference on Optical, Electronic Materials and Applications 2011, OEMA 2011, March 4, 2011 - March 6, 2011, Chongqing, China 作者: Liu J.; Jia P.; Liu J.; Liu J. 收藏 \| 浏览/下载：35/0 \| 提交时间：2013/03/25 The characteristic of the drift error of inertial platform is a high-order nonlinear dynamic system using the neural networks' abilities of universal approximation of differentiable trajectory and capturing system dynamic information this paper presents the drift error identifying project of inertial platform based on Elman networks structure. First the drift error model of inertial platform is established after selecting the input and output for network momentum and alterable speed algorithm is used to speed up the network convergence. On the basis of the algorithm the extended nonlinear node function in the hidden network does not only improve the learning speed of network but also satisfies the need of accuracy on system identification. Through the drift error data measured on inertial platform the training result shows that the scheme achieves satisfied identification results. (2011) Trans Tech Publications.
	ADAPTIVE QUADRILATERAL AND HEXAHEDRAL FINITE ELEMENT METHODS WITH HANGING NODES AND CONVERGENCE ANALYSIS 期刊论文 OAI收割 JOURNAL OF COMPUTATIONAL MATHEMATICS, 2010, 卷号: 28, 期号: 5, 页码: 621-644 作者: Zhao, Xuying; Mao, Shipeng; Shi, Zliong-Ci; Shi Zhongci; Zhao Xuying \| 收藏 \| 浏览/下载：14/0 \| 提交时间：2018/07/30 Finite element method Adaptive algorithm Hanging node 1-irregular mesh Convergence analysis