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
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.
Zhu P.,Jiangsu Teachers University of Technology
2010 International Conference on Future Information Technology and Management Engineering, FITME 2010 | Year: 2010
Surface electromyography (SEMG) is a bioelectricity phenomenon with muscle activities, the key of design of SEMG detection circuit is how to extract the signal from the strong noise background and amplify it at high multiple. This paper analyzed the characteristics and circuit model of SEMG, presented a detection circuit with high CMRR including DC signal isolation and preamplifier circuit, 50Hz notch filter using special active filter chip (UAF42), high-pass filter and low-pass filter. The detection circuit was successfully applied in the control system of prosthesis hand. © 2010 IEEE.
Liang G.,Jiangsu Teachers University of Technology |
Mo Y.,Chinese Academy of Sciences |
Zhou Q.,Jiangsu Teachers University of Technology
Enzyme and Microbial Technology | Year: 2010
Effects of two acidophiles on metals recovery in printed circuit boards (PCBs) were investigated. Based on the phenomenon that PCBs addition times and amounts adversely inhibited bacterial growth and thus lowered metals bioleaching capacity, novel strategies of multiple PCBs additions (4 g/l at 48 h, 6 g/l at 96 h and 8 g/l at 144 h) were developed in separated culture of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans. As a result, percentages of Cu, Ni, Zn and Pb leached by A. thiooxidans were 78, 73, 75 and 71%, and corresponding values were 80, 73, 76 and 72% by A. ferrooxidans after 240 h cultivation. Further applying the strategies to mixed culture of two acidophiles, extraction percentages of Cu, Ni, Zn and Pb were 94, 89, 90 and 86%, respectively. Moreover, increased redox potential and lowered pH in filtrate were observed, suggesting the mechanism involved in enhancing metals recovery in mixed culture. © 2010 Elsevier Inc.
Cheng S.S.,Jiangsu Teachers University of Technology
ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings | Year: 2011
In this paper, an adaptive approach is presented to nonlinear system for real-time robotic visual tracking of a moving polyhedral object. A light stripe vision system consists of a laser-stripe sensor and a CCD the camera fixed to robot end-effector, and projects planar light on the polyhedral object. The geometric conditions can be provided to assure location of features of the polyhedral faces. The objective is to predict the location of features of the object on the image plane based on the light stripe vision system and then to determine an optimal control input that will move the camera so that the image features align with their desired positions. We first give the equations of observation and state-space by using the motion rules of the camera and the object. Then, the system can be represented as an MIMO ARMAX model and an efficient estimation model. The estimation model can process on-line estimation of the 3D related parameters between the camera and the object. Those parameters are used as on-line train values of neural network. The control scheme adopts a neural-PID controller that can adjust the PID controller parameters. The paper concludes with the simulation results and the computer simulation shows that the proposed method is effective to visual tracking of combining vision and control. © 2011 IEEE.
Qian J.,Tongji University |
Qian J.,Jiangsu Teachers University of Technology |
Miao D.Q.,Tongji University |
Zhang Z.H.,Tongji University |
Li W.,Tongji University
International Journal of Approximate Reasoning | Year: 2011
Attribute reduction is one of the key issues in rough set theory. Many heuristic attribute reduction algorithms such as positive-region reduction, information entropy reduction and discernibility matrix reduction have been proposed. However, these methods are usually computationally time-consuming for large data. Moreover, a single attribute significance measure is not good for more attributes with the same greatest value. To overcome these shortcomings, we first introduce a counting sort algorithm with time complexity O(C U) for dealing with redundant and inconsistent data in a decision table and computing positive regions and core attributes (C and U denote the cardinalities of condition attributes and objects set, respectively). Then, hybrid attribute measures are constructed which reflect the significance of an attribute in positive regions and boundary regions. Finally, hybrid approaches to attribute reduction based on indiscernibility and discernibility relation are proposed with time complexity no more than max(O(C2U/C), O(CU)), in which U/C denotes the cardinality of the equivalence classes set U/C. The experimental results show that these proposed hybrid algorithms are effective and feasible for large data. © 2010 Elsevier Inc. All rights reserved.
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.
Jia Z.,Jiangsu Teachers University of Technology
Proceedings - 2012 International Conference on Intelligent Systems Design and Engineering Applications, ISDEA 2012 | Year: 2012
A range-free visible light communication (VLC) based positioning method is proposed for indoor wireless sensor networks (WSN). Then the proposed VLC based positioning method and the conventional received signal strength indication (RSSI) based positioning methods are merged into a hybrid positioning method for indoor WSN to get more accuracy position message with lower power consumption. Computer simulations demonstrate that in a Rician fading environment, the accuracy of positioning can be effectively improved with the proposed hybrid positioning method and also longer battery life can be expected since the lower power consumption. © 2012 IEEE.
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.
Lu H.,Jiangsu Teachers University of Technology |
Zhang J.,Nanjing Normal University
Computers and Mathematics with Applications | Year: 2012
In this paper, an improved version of section theorem is proved in FWC-spaces without any linear and convex structure under much weaker assumptions, and next as its applications, some new coincidence theorems and minimax inequalities are established in FWC-spaces. These results generalize many known theorems in the literature. © 2011 Elsevier Ltd. All rights reserved.