Yan S.,Yancheng Teachers University
Physica A: Statistical Mechanics and its Applications | Year: 2017
We explore the evolution of human mobility behavior based on public goods game. By using mean field method, the population distribution in different regions is theoretical calculated. Numerical simulation results show that the correlation between the region's degree and its final population is not significant under a larger human migration rate. Human mobility could effectively promote cooperative behavior and the population balance of different regions. Therefore, encouraging individuals to migrate may increase the total benefits of the whole society. Moreover, increasing the cooperation cost could reduce the number of cooperators, and that would happen to the correlation between the region's degree and its final population. The results indicate the total population could not dramatically rise with the region's degree under an unfair society. © 2017
Yang L.,Yancheng Teachers University
Guangxue Xuebao/Acta Optica Sinica | Year: 2017
In order to verify the theoretical relationship of the diffraction efficiency of multi-layer diffractive optical elements varying with the angle of incidence, an optical system with multi-layer diffractive optical elements is designed and manufactured. To ensure the measurement accuracy of diffraction efficiency when light of secondary order diffraction is received by the detector after passing through the pinhole aperture, a correction method of first-order diffraction energy is proposed. The diffraction efficiency of the multi-layer diffractive optical elements with the incident angles ranging from 0° to 30.6° is measured by the established double light-path measurement device. Diffraction efficiency is measured at seven different incident angles with the designed wavelength of 532 nm, and the measurement results are simulated and analyzed. Due to some manufacturing errors, the diffraction efficiency obtained by the actual measurement is lower than the theoretical analysis results. However, both measured and theoretical results show that the diffraction efficiency of multi-layer diffractive optical elements declines with the increase of incident angle. © 2017, Chinese Lasers Press. All right reserved.
Yu J.-J.,Yancheng Teachers University
International Journal of Automation and Computing | Year: 2011
This paper concerns the robust stability analysis of uncertain systems with time delays as random variables drawn from some probability distribution. The delay-distribution-dependent criteria for the exponential stability of the original system in mean square sense are achieved by Lyapunov functional method and the linear matrix inequality (LMI) technique. The proposed approach involves neither free weighting matrices nor any model transformation, and it shows that the new criteria can provide less conservative results than some existing ones. Numerical examples are given to demonstrate the effectiveness and the benefits of the proposed method. © 2011 Institute of Automation, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg.
Yu J.,Yancheng Teachers University
International Journal of Control, Automation and Systems | Year: 2012
In this paper, the problem of the stability for a class of stochastic systems with time-varying interval delay is investigated. Through constructing a novel Lyapunov-Krasovskii functional and utilizing the information of both the lower and upper bounds of the delay, the delay-dependent sufficient criteria are derived in terms of linear matrix inequalities (LMIs). Neither model transformations nor bounding techniques for cross terms is employed, so the derived criteria are less conservative than the existing results. Meanwhile, the computational complexity of the obtained stability conditions is reduced because fewer variables are involved. Numerical examples are given to show the effectiveness and the benefits of the proposed method. © ICROS, KIEE and Springer 2012.
Qiu C.,Yancheng Teachers University
Proceedings of the 2011 2nd International Conference on Digital Manufacturing and Automation, ICDMA 2011 | Year: 2011
A design of test system based on CAN-bus and the automobile network theory is proposed. Several key methods to reaLize the process of design are discussed. These include signal test, data communication and network analysis. The CAN-bus test system based on Volkswagen PASSAT B5 is designed. Practical results demonstrate that the system has a favorable and reLiable performance, and with a good appLication prospect. © 2011 IEEE.
Chen H.,Yancheng Teachers University
Physics Letters, Section A: General, Atomic and Solid State Physics | Year: 2011
We have studied the structure, electronic and magnetic properties of wurtzite (WZ) ZnS semiconductor doped with one or two C atoms using first-principles calculations. The moderate formation energy implied that C-doped ZnS could be fabricated experimentally. The total magnetic moment of the 72 atom super cell was 2.02 μB, mainly due to the 2p component of the C atom. Electronic structures showed ZnS doped with C atom was p-type half-metallic ferromagnetic (FM) semiconductor and hole mediation was responsible for the ferromagnetism. The large energy difference (154 meV) between the FM and antiferromagnetic (AFM) state implied room-temperature ferromagnetism for C-doped WZ ZnS, which has great potential in spintronic devices. © 2011 Elsevier B.V. All rights reserved.
Xie J.,Yancheng Teachers University
Journal of Magnetism and Magnetic Materials | Year: 2010
The electronic and magnetic properties of wurtzite ZnS semiconductor doped with transition metal (Cr, Mn, Fe, Co, and Ni) atoms are studied by using the first-principle's method in this paper. The ZnS bulk materials doped with Cr, Fe, and Ni are determined to be half-metallic, while those doped with Mn and Co impurities are found to be semiconducting. These doped transition metal ions have long range interactions mediated through the induced magnetic moments in anions and cations of host semiconductors. These doped ZnS-based diluted magnetic semiconductors seem to be good candidates for the future spintronic applications. © 2010 Elsevier B.V.
Shi X.-R.,Yancheng Teachers University
Nonlinear Dynamics | Year: 2010
Bursting synchronization of Hind-Rose system is investigated. Two schemes with only a single controller are proposed to synchronize Hind-Rose chaotic system via the back-stepping method. Especially in the second scheme, only one state variable is contained in the controller. Based on Lyapunov stability theory, the sufficient conditions for synchronization are obtained analytically in both cases. Finally, numerical simulations are provided to show the effectiveness of the developed methods. Copyright © 2009 Springer Science+Business Media B.V.
Wang Z.-L.,Yancheng Teachers University
Nonlinear Dynamics | Year: 2010
This work is concerned with projective synchronization of hyperchaotic Lü system and Liu system by add-order method. Different controllers are designed to projective-synchronize the two nonidentical chaotic systems, active control is used when parameters are known, while the adaptive control law and the parameter update rule are derived via adaptive control when parameters are uncertain. Moreover, the convergence rates of the scheme can be adjusted by changing the control coefficients. Finally, numerical simulations are also shown to verify the results. © 2009 Springer Science+Business Media B.V.
Wang Z.,Yancheng Teachers University
Nonlinear Analysis: Real World Applications | Year: 2010
Synchronization of an energy resource system is investigated. Three linear control schemes are proposed to synchronize a chaotic energy resource system via the back-stepping method. This can be viewed as an improvement to the existing results of Tian et al. (2006) . Because we use simpler controllers to realize a global asymptotical synchronization. In the first two schemes, the sufficient conditions for achieving synchronization of two identical energy resource systems using linear feedback control are derived by using Lyapunov stability theorem. In the third scheme, the synchronization condition is obtained by numerical method, in which only one state variable controller is contained. Finally, three numerical simulation examples are performed to verify these results. © 2009 Elsevier Ltd. All rights reserved.