Learn More
This paper proposes a novel pixel-chaotic-shuffle method for image encryption. Since the dynamic response of chaotic system is highly sensitive to the initial values of a system and to the variation of a parameter, chaotic trajectory is very unpredictable. Therefore we use the chaotic sequences generated by chaotic systems as encryption codes and then(More)
As a result of the development of computer network technology, communication of information through personal computer is becoming more convenient. Meanwhile, it also gives hackers opportunities to attack the network. Therefore the communication security is now an important issue for multimedia communications. This paper proposed a hybrid encryption(More)
This paper deals with the problem of delay-dependent robust H∞ control for discrete-time recurrent neural networks (DRNNs) with norm-bounded parameter uncertainties and interval time-varying delay. The activation functions are assumed to be globally Lipschitz continuous. For the robust stabilization problem, a state feedback controller is designed to ensure(More)
Now a days, in every communication channel there is a necessity of transmission of messages securely from sender to the authentic receiver. In recent years, for different information transfer systems, a number of data encryption techniques has been evolved. Several encryption approaches based on permutation have been proposed by various researchers. In this(More)
In this paper, it is first proposed that genetic algorithm and Taguchi method can be employed in the optimal design of DC-DC converter with RCD snubber. The purpose of this optimal design is to lower the spike voltage V<sub>dsp</sub> of power switch and hence reduce the cost in manufacturing circuit. It is of great educational value for students and(More)
In this paper, it is first proposed that genetic algorithm and Taguchi method can be employed in the optimal design of DC-DC converter with LC snubber. The purpose of this optimal design is to lower the spike voltage dsp V across power switch and hence reduce the manufacturing cost. For the first step, we investigate the circuit parameters which will affect(More)
This paper presents an optimal design of lossless passive snubber for DC/DC converters, which offers an efficient and best design method. The proposed method can not only reduce the spike voltage V<sub>dsp</sub> of a power switch in the circuit, but also raise the conversion efficiency of the converter. In this paper, we have used Taguchi method to create(More)
In this paper the problem of using displacement influence lines to detect, locate and evaluate degree of damage in beam structures is investigated. The main problem in many researches due to a limited number of the measurement instruments is overcome in methods presented in papers [1-3] by using displacement influence lines. According to Stimac et al. [1,2](More)
The dynamic response of chaotic system is unpredictable and highly sensitive to the variation of initial values of a system. Therefore, the distinguished elements of variables applied to produce encryption codes for the color-image encryption can increase the communication security. This paper proposed a hybrid encryption technique for the color image based(More)