Two accepted papers in TICST‘15

NISC Center would like to congratulate Drs. Lobna A Said, Ahmed H. Madian and Ahmed G Radwan for their two accepted papers in the International Conference on Science and Technology (TICST), in Thailand.

[1] Samar M Ismail, Lobna A Said, Ahmed G Radwan, Ahmed H. Madian, Mohamed F Abu-ElYazeed, Ahmed M Soliman, “Generalized delay logistic map suitable for pseudo-random numer generator,” International Conference on Science and Technology (TICST), pp. 327-331, Thailand, 2015.

This paper presents the generalization of a delayed version of the logistic map. The effect of the added two general parameters is studied, which offers the option of having three different maps. The dynamic behavior of the vertical, zooming and the general map is analyzed. The study of the fixed points, stability ranges and bifurcation diagram of the delayed logistic map at hand is detailed in this work. The flow of the system behavior from stability to chaos is also presented with its transient response as well as its phase plane portraits. Moreover, using the general parameters, the option of designing any specific map is validated by some design examples, which makes it more optimal for any specific applications. The added general parameters offer increased randomness with controllability of the map design, making it more suitable for pseudo-random sequence generators which are used in image encryption algorithms and in secure communication transfer.

[2] Lobna A Said, Ahmed G Radwan, Ahmed H Madian, Ahmed M Soliman, “Fractional order oscillators with single non-zero transmission matrix element, “International Conference on Science and Technology (TICST), pp. 56-60, Thailand, 2015.

his paper presents a study of fractional order oscillator design based on a matrix. The presented oscillator consists of a general two port network and three impedances. Only two port with single element in its transmission matrix is discussed which gives four possible networks. Different combinations for one element have been investigated. The impedances associated with the studied networks are series or parallel connection of resistors in addition to fractional order capacitors. The characteristic equation, oscillation frequency and condition for each combination are introduced. Numerical discussions of the presented oscillators with Spice simulations are presented to validate the theoretical findings.

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