A
Ahmed H. Madian
Researcher at Nile University
Publications - 186
Citations - 2277
Ahmed H. Madian is an academic researcher from Nile University. The author has contributed to research in topics: CMOS & Memristor. The author has an hindex of 22, co-authored 172 publications receiving 1628 citations. Previous affiliations of Ahmed H. Madian include Cairo University & German University in Cairo.
Papers
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Journal ArticleDOI
FPGA implementation of two fractional order chaotic systems
Mohammed F. Tolba,Amr M. AbdelAty,Nancy S. Soliman,Lobna A. Said,Ahmed H. Madian,Ahmed H. Madian,Ahmad Taher Azar,Ahmad Taher Azar,Ahmed G. Radwan,Ahmed G. Radwan +9 more
TL;DR: This paper discusses the FPGA implementation of the fractional-order derivative as well as two fractional -order chaotic systems where one of them has controllable multi-scroll attractors and the Maximum Lyapunov Exponent is calculated for such systems.
Journal ArticleDOI
Generalized double-humped logistic map-based medical image encryption
Samar M. Ismail,Lobna A. Said,Ahmed G. Radwan,Ahmed H. Madian,Ahmed H. Madian,Mohamed F. Abu-Elyazeed +5 more
TL;DR: In this paper, a generalized double-humped (DH) logistic map was used for pseudo-random number key generation (PRNG) and an image encryption algorithm was introduced based on the proposed generalized DH map offering secure communication transfer of medical MRI and X-ray images.
Journal ArticleDOI
A novel image encryption system merging fractional-order edge detection and generalized chaotic maps
Samar M. Ismail,Lobna A. Said,Ahmed G. Radwan,Ahmed G. Radwan,Ahmed H. Madian,Ahmed H. Madian,Mohamed F. Abu-Elyazeed +6 more
TL;DR: A novel lossless image encryption algorithm based on edge detection and generalized chaotic maps for key generation that has higher statistical and cryptanalytic properties and is suitable for medical imaging security is presented.
Journal ArticleDOI
Fractional order oscillators based on operational transresistance amplifiers
Lobna A. Said,Ahmed G. Radwan,Ahmed G. Radwan,Ahmed H. Madian,Ahmed H. Madian,Ahmed M. Soliman +5 more
TL;DR: In this article, a general analysis of the fractional order operational transresistance amplifiers (OTRA) based oscillator is presented and validated through eight different circuits which represent two classifications according to the number of OTRAs.
Journal ArticleDOI
On The Optimization of Fractional Order Low-Pass Filters
Lobna A. Said,Samar M. Ismail,Ahmed G. Radwan,Ahmed H. Madian,Mohamed F. Abu El-Yazeed,Ahmed M. Soliman +5 more
TL;DR: A multi-objective optimization technique is used for controlling some filter specifications, which are the transition bandwidth, the stop band frequency gain and the maximum allowable peak in the filter pass band.