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Prof. Ahmed G. Radwan

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Monthly Archives: December 2021

Design and FPGA Verification of Custom-Shaped Chaotic Attractors Using Rotation, Offset Boosting and Amplitude Control

This paper proposes a method of generating custom-shaped attractors, which depends on a planarly rotating V-shape multi-scroll chaotic system with offset boosting and amplitude control, and its FPGA verification

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Mathematical models comparison of biogas production from anaerobic digestion of microwave pretreated mixed sludge

Microwave (MW) sludge pretreatment enhances anaerobic digestion in terms of organics solubilization, sludge de-waterability and biogas production

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A generalized family of memristor-based voltage controlled relaxation oscillator

Recently, memristive oscillators are a significant topic in the nonlinear circuit theory where there is a possibility to build relaxation oscillators without existence of reactive elements

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FPGA realization of a speech encryption system based on a generalized modified chaotic transition map and bit permutation

This paper proposes a generalized modified chaotic transition map with three independent parameters

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Comprehensive comparison based on meta-heuristic algorithms for approximation of the fractional-order Laplacian s ? as a weighted sum of first-order high-pass filters

To implement an approximation of the fractional order Laplacian operator s ? as a weighted sum of high pass filter sections, it is essential to extract the cutoff frequencies and filter gains of each section in order to achieve the lowest error possible

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Programmable constant phase element realization with crossbar arrays

Introduction: Constant Phase Elements (CPEs) have been widely used in many applications due to the extra degree of freedom, which offers new responses and behaviors

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Two implementations of fractional-order relaxation oscillators

This work proposes general formulas for designing two different topologies of fractional-order relaxation oscillators

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On the Approximations of CFOA-Based Fractional-Order Inverse Filters

In this paper, three novel fractional-order CFOA-based inverse filters are introduced

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Comparison between three approximation methods on oscillator circuits

The promising capabilities of fractional-order devices challenge researchers to find a way to build it physically

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All Possible Topologies of the Fractional-Order Wien Oscillator Family Using Different Approximation Techniques

This paper introduces all the possible topologies of the Wien bridge oscillator family

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RECENT PUBLICATIONS
  • Valorization of Agricultural and Marine Waste for Fabrication of Bio-Adsorbent Sheets
  • MPPT for a Partially Shaded PV System Using Accelerated Particle Swarms
  • On Fractional-order Capacitive Wireless Power Transfer System
  • Time-domain Li-ion Battery Modeling under Staircase Charging and Discharging
  • Progressive Multi-Secret Sharing of Color Images Using Lorenz Chaotic System
RESEARCH TOPICS

Bio-impedance for Food Quality Biomedical and Robotic Engineering Biomedical Engineering Chaotic & Coding Systems with Applications Chaotic Systems and Applications Design and Applications of Mem-elements Fractional-order systems Modeling and Applications of New Electrical Elements and Recent Technology Modeling of Supercapacitors and Energy Storage Elements Wastewater Treatments

AHMED RADWAN

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Get In Touch

  • NU Main Campus: 26 July Corridor, Sheikh Zayed City
  • agradwan@nu.edu.eg
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