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JIA Meng
XinXiang University

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Unstable Manifold of Hénon Map LI Zhongqin; JIA Meng
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 2: February 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

A new algorithm is presented for computing one dimensional unstable manifold of a map and Hénon map is taken as an example to test the performance of the algorithm. The unstable manifold is grown with new point added at each step and the distance between consecutive points is adjusted according to the local curvature. It is proved that the gradient of the manifold at the new point can be predicted by the known points on the manifold and in this way the preimage of the new point could be located immediately. During the simulation, it is found that the unstable manifold of Hénon map coincides with its direct iteration when canonical parameters are chosen which means order is obtained out of chaos. In the other several groups of parameters the two branches of the unstable manifolds are nearly symmetric, and they serve as the borderline of the Hénon map iteration sequence. We hope that this would contribute to the further exploration of Hénon map. DOI : http://dx.doi.org/10.11591/telkomnika.v12i2.4328
Application of Zigbee in Smart Home with Dynamic Routing Algorithm Jia Meng; Li Zhongqin
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 1: January 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

In order to avoid damaging the walls and bore a hole through the walls., also to save the cost of rewiring , low voltage power line can be used to implement the smart home .However ,several difficult problem must be solved at the same time , the most important are finding a technology method to suppress the noise interference and resist the weaker signal. The  smart home system is introduced in the paper. During the design of Smart Home System adopting power line signal carrier, a dynamic routine algorithm based on the idea of Genetic Algorithm is proposed to cope with the time-varying and random feature of power line channel. Thus the system can find the transmission path in real time and dispatch the signal carrier to transmit among the nodes. With this algorithm, the communication between a certain group-controller and its terminal nodes or between the main-controller and the group-controllers is realized successfully. In the proposed algorithm all nodes but the controller adopt same driver, therefore the plug and play is realized for all nodes. DOI : http://dx.doi.org/10.11591/telkomnika.v12i1.4001   
Underground Image Denoising Zhang Ye; Jia Meng
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 6: June 2014
Publisher : Institute of Advanced Engineering and Science

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A Mixed Window Shrink and BayesShrink Image Denoising Algorithm Based on Curve let Transform is proposed in this paper. Curve let transform is effective in presenting line and surface property of image. In the proposed algorithm, Curvelet transform is employed for the first stage, then according the theory of image demising method based on Wavelet transform, we combine Window Shrink and BayesShrink denoising algorithm to perform noise reduction. Experiment results show that the proposed algorithm is competitive to Wavelet transform in terms of Peak Signal to Noise Ratio (PSNR) and denoising image quality.  DOI : http://dx.doi.org/10.11591/telkomnika.v12i6.5479
Co-Authors LI Zhongqin Zhang Ye