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Bao B.C.,Jiangsu Teachers University of Technology | Liu Z.,Nanjing University of Science and Technology | Xu J.P.,Southwest Jiaotong University
Electronics Letters | Year: 2010

By replacing Chua's diode in the canonical Chua's oscillator with a smooth flux-controlled memristor, a memristor based oscillator is presented. The memristor oscillator generates a steady periodic orbit and has a transition from transient chaotic to steady periodic behaviour. The complicated dynamical behaviour is extremely dependent on the initial condition of the memristor. © 2010 The Institution of Engineering and Technology. Source


Hu L.-Y.,Jiangxi Normal University | Xu X.-X.,Jiangxi Normal University | Wang Z.-S.,Jiangxi Normal University | Xu X.-F.,Jiangsu Teachers University of Technology
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2010

We investigate nonclassical properties of the field states generated by subtracting any number of photons from the squeezed thermal state (STS). It is found that the normalization factor of photon-subtracted STS (PSSTS) is a Legendre polynomial of squeezing parameter r and average photon number n of the thermal state. Expressions of several quasiprobability distributions of PSSTS are derived analytically. Furthermore, the nonclassicality is discussed in terms of the negativity of the Wigner function (WF). It is shown that the WF of single PSSTS always has negative values if n Source


Zhou X.-Y.,Jiangsu Teachers University of Technology
Wuli Xuebao/Acta Physica Sinica | Year: 2011

A novel three-dimensional chaotic system with invariable Lyapunov exponent is proposed. The new system contains six system parameters, one quadratic cross-product term, and one square term. The dynamic properties of the new system are investigated via theoretical analysis, numerical simulation, Lyapunov dimension, Poincare diagrams, Lyapunov exponent spectrum, and bifurcation diagrams. The different dynamic behaviors of the new system are analyzed when each system parameter is changed. When the parameter of the square term varies, the Lyapunov exponent spectrum keeps invariable, the amplitudes of the signals of the first two dimensions change each as a power function with a minus half index, but the third one keeps its amplitude in the same range. Finally, the circuit of this new chaotic system is designed and realized by Multisim software, which confirms that the chaotic system can be achieved. © 2011 Chinese Physical Society. Source


Song Y.-C.,Jiangsu Teachers University of Technology
Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and Technology | Year: 2012

In order to obtain an arch with easy control and modification and good mechanical properties, the formation and characteristics of the new arch axis are studied. Through the geometric transformation of the oval in the single plane field, a new curve is formed, that is, derivative curve based on the oval(DCBO). A new arch is built based on the DCBO. With the software SolidWorks, the simulation results show that: when the ratio of the height and the span is larger, the capability of anti-deforming and the compressive bearing are superior to other common arches; this arch axis has good adjustment capability; and the structure optimization of the arch can be realized. Source


Zhou X.-Y.,Jiangsu Teachers University of Technology
Wuli Xuebao/Acta Physica Sinica | Year: 2012

In this paper, a novel three-dimensional autonomous chaotic system is reported. The dynamic properties of the new system are investigated via Lyapunov dimension, numerical simulation, Poincare diagrams, Lyapunov exponent spectrum and bifurcation diagrams. The different dynamic behaviors of the system are analyzed especially when each system parameter is changed. Finally, the circuit of this new chaotic system is designed and realized by Multisim software. The simulation results confirm that the chaotic system is different from the exisiting chaotic systems and is a novel chaotic system. © 2012 Chinese Physical Society. Source

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