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The chaos synchronization problem is investigated in a coronary artery system with periodic disturbance. Based on the Lyapunov stability theory and the comparison theorem, an effective impulsive law with variable control gains and impulsive intervals is designed to achieve synchronization of the chaotic coronary artery system. The upper bound of impulsive interval is given to ensure the stable synchronization...
Concerning the problem of lane detection in the Lane Departure Warning (LDW) system, this paper uses Heuristic Search Methods to detect the lane boundary points based on the CIELab color features clustering. Color space providing us more precious information than gray scale, and Heuristic Search Methods narrowing the search region, this algorithm is robust and adaptive to the actual road conditions...
Design of RF pulses for parallel excitation using phased array transmit coils in MRI requires the B1+ maps that are estimated from B1+ mapping experiments. This paper characterizes the effects of B1+ mapping errors on the resulting excitation pattern using a small perturbation analysis based on linearization of the Bloch equation. The accuracy of the proposed perturbation analysis is validated...
The occurrence cause and negative effects of the islanding are presented in the paper, and a new method is presented based on chaos system. This paper applies certain chaos system of its sensitivity to periodical voltage signal to make its periodical solution yield a dramatic change to detect islanding, existence of the islanding can be identified by discriminating operation status of chaos system...
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