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In this paper image encryption and decryption using combined key sequence of Logistic map and Lozi map is proposed. Initially discrete key sequence {K1i}={K11, K12, K13… K1n} where ‘n’ is size of the image and K1i €{0, 255} is generated using Logistic function. Then Lozi map is used to generate a discrete key sequence {K2i}={K21, K22, K23… K2n} K2i €{0, 255}. Both the Key sequences are combined using...
Owing to different personal preferences, knowledge backgrounds and life experience of decision experts, divergent opinions always exist in group decision-making, and influence the assembly of the final opinions in varying degrees. Therefore, the determination and treatment of divergent opinions appear to be extremely important. For the existing divergent opinions in group decision-making, this paper...
The object of this paper is to establish a useful mathematical model to predict the method which is used by Lenardo to get the roots of some special three times equation. According to the Mathematical yearbook, there exists no means to work out equations of higher degree during the year 1 AD to 1280AD. Considering the time complexity and solving feasibility with the multi-objective optimization, we...
This paper proposes a method to estimate the flicker severity index using the Walsh Hadamard transform (WHT). A weighting filter in the sequency domain is utilized for direct computation of the flicker index. The proposed method is compared with a flicker meter in the frequency domain that uses the fast Fourier transform (FFT). It is seen by numerical simulations that the proposed method yields flicker...
The paper gives the definition of consistency of interval number complementary judgement matrix, structuring object function, it gets the interval weight. Furthermore, it gets a simple method for checking the consistency of interval number complementary judgement matrix without having to solve linear program. Finally, a numerical example is given to illustrate the use of this method.
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