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Shiyan, China

Tong D.,Donghua University | Zhu Q.,Donghua University | Zhou W.,Donghua University | Xu Y.,Yunyang Teachers College | Fang J.,Donghua University
Neurocomputing | Year: 2013

This paper concerned with the adaptive synchronization for Takagi-Sugeno (T-S) fuzzy neural networks with stochastic noises and Markovian jumping parameters. By using a new nonnegative function and an M-matrix method, several sufficient conditions are derived to ensure the adaptive synchronization for stochastic T-S fuzzy neural networks. Moreover, the adaptive controller and parameter update laws are designed via adaptive feedback control methods. Finally, a numerical example is given to illustrate the effectiveness of proposed theories. © 2013 Elsevier B.V.

Yu X.,Yunyang Teachers College
MATEC Web of Conferences | Year: 2015

As a new method to understand mathematics, visualization offers a new way of understanding mathematical principles and phenomena via image thinking and geometric explanation. It aims to deepen the understanding of the nature of concepts or phenomena and enhance the cognitive ability of learners. This paper collates and summarizes the application of this visual method in the understanding of mathematics. It also makes a literature review of the existing research, especially with a visual demonstration of Euler's formula, introduces the application of this method in solving relevant mathematical problems, and points out the differences and similarities between the visualization method and the numerical-graphic combination method, as well as matters needing attention for its application. © Owned by the authors, published by EDP Sciences, 2015.

Xu Y.,Yunyang Teachers College | Yang H.,China Three Gorges University | Tong D.,Donghua University | Wang Y.,South-Central University for Nationalities
Nonlinear Dynamics | Year: 2013

In this paper, the analysis problem of adaptive exponential synchronization in pth moment is considered for stochastic complex networks with time varying multi-delayed coupling. By using the Lyapunov-Krasovskii functional, stochastic analysis theory, several sufficient conditions to ensure the mode adaptive exponential synchronization in pth moment for stochastic delayed complex networks are derived. To illustrate the effectiveness of the synchronization conditions derived in this paper, a numerical example is finally provided. © 2013 Springer Science+Business Media Dordrecht.

Zhong T.,Yunyang Teachers College
MATEC Web of Conferences | Year: 2015

In this paper, the author considers a difference scheme of Laudau-Lifshitz equation (LL for short) and modulus of un jujn which are constantly remaining equal to 1. Using this iteration format error which is ordered to t/2h2 t2h2, the author comes to a conclusion based on several initial simulations. According to some conditions, the author gives the numerical solution, the examples of exact solution and the error comparisons of the solutions. © Owned by the authors, published by EDP Sciences, 2015.

Zeng Z.,Yunyang Teachers College
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2015

SiCp/Cu composites were prepared by the vacuum hot-pressed sintered technology and powder metallurgy method. The thermal conductivity of the composites at room temperature was measured by laser pulse method. The results reveal that that thermal conductivity of the alloy is decreased gradually with the increase of SiCp volume fraction, especially the volume fraction more than 30% SiCp. The thermal conductivity of the composites is related with internal defects, the mismatch between copper and SiCp particle as well as interface reaction. In order to prepare composites with good thermal conductivity properties, volume fraction of SiCp particles should be controlled strictly at 15% to 30% to improve density and reducing the dislocations, voids and other defects. ©, 2015, Journal Office of Special Casting and Nonferrous Alloys. All right reserved.

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