American Journal of Computational and Applied Mathematics

American Journal of Computational and Applied Mathematics is a peer-reviewed international journal. This journal publishes significant research papers from all branches of applied mathematical and computational sciences. It publishes original papers of high scientific value in all areas of computational and applied mathematics.

Usama Hegazy

Editorial Board Member of American Journal of Computational and Applied Mathematics

Assistant Professor, Al-Azhar University-Gaza, Palestinian Territories

Research Areas

Nonlinear Dynamic Systems, Vibration Phenomena and Control, Stability, Numerical Analysis, Ordinary and Partial Differential Equations

Education

2007Ph.DApplied Mathematics from Zagazig University, Egypt
1994M.ScComputational Fluid Dynamics and Structural Mechanics from Imperial College, University of London, UK
1992B.ScMathematics from Zagazig University, Egypt

Experience

2010-presentDeputy Dean, Faculty of Science, Al-Azhar University, Gaza, Palestine
2007-2009Mathematics Department, Faculty of Science, Al-Azhar University, Gaza, Palestine
2007-presentAssistant Professor, Department of Mathematics, Faculty of Science, Al-Azhar University, Gaza, Palestine
1995-2007Lecturer, Department of Mathematics, Faculty of Science, Al-Azhar University, Gaza, Palestine

Publications: Journals

[1]  Y. A. Amer, M. H. Eissa, U. H. Hegazy and A. S. Sabbah, "Dynamic behavior of an AMB/supported rotor subject to parametric excitation" Journal of Vibration and Acoustics (American Society of Mechanical Engineers), 2006, 128(5), pp. 646-652.
[2]  Y. A. Amer and U. H. Hegazy, "Resonance behavior of a rotor-active magnetic bearing with time-varying stiffness" Chaos Solitons & Fractals (Elsevier), 2007, 34(4), pp 1328-1345.
[3]  M. H. Eissa, U. H. Hegazy and Y. A. Amer, "Dynamic behavior of an AMB supported rotor subject to harmonic excitation" Applied Mathematical Modelling (Elsevier), 2008, 32(7), pp. 1370-1380.
[4]  U. H. Hegazy, M. H. Eissa and Y. A. Amer, "A time-varying stiffness of a rotor AMB under combined resonance" Journal of Applied Mechanics (American Society of Mechanical Engineers), 2008, 75, 011011, 12 pages.
[5]  U. H. Hegazy, and Y. A. Amer, "A time-varying stiffness of a rotor AMB under parametric excitation" Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 2008, 222(C3), pp. 447-458.
[6]  U. H. Hegazy, "Single-Mode Response and Control of a Hinged-Hinged Flexible Beam" Archive of Applied Mechanics (Springer), 2009, 79(4), pp. 335-345.
[7]  U. H. Hegazy, "Dynamics and Control of a Self-sustained Electromechanical Seismographs With Time-Varying Stiffness" Meccanica (Springer), 2009, 44(4), pp. 355-368.
[8]  U. H. Hegazy, " 3:1 Internal Resonance of a String-Beam Coupled System with Cubic Nonlinearities " Communications in Nonlinear Science and Numerical Simulation (Elsevier), 2010, 15(12), pp. 4219-4229.
[9]  U. H. Hegazy, " Nonlinear Vibrations of a Thin Plate Under Simultaneous Internal and External Resonances " Journal of Vibration and Acoustics (American Society of Mechanical Engineers), 2010, 132, 051004, 9 pages.
[10]  Hongkui Chen and U. H. Hegazy, " Nonlinear Dynamic Behavior of a Rotor Active Magnetic Bearing " International Journal of Bifurcation and Chaos (World Scientific), 2010, 2010, 20(12), pp. 1-34.
[11]  M. Siewe Siewe and Usama H. Hegazy, " Homoclinic bifurcation and chaos control in MEMS Resonators " Applied Mathematical Modelling (Elsevier), 2011, accepted.

Publications: Conferences/Workshops/Symposiums

[1]  Y. A. Amer, M. H. Eissa, U. H. Hegazy and A. S. Sabbah, "Dynamic behavior of an AMB/supported rotor subject to parametric excitation" The first International Conference on Basic & Applied Sciences (ICBAS2010), Al-Azhar University-Gaza, Gaza, Palestine, October 10-12, 2010.
[2]  U. H. Hegazy, "Single-Mode Response and Control of a Hinged-Hinged Flexible Beam" The first International Conference on Basic & Applied Sciences (ICBAS2010), Al-Azhar University-Gaza, Gaza, Palestine, October 10-12, 2010.
[3]  U. H. Hegazy, "Dynamics and Control of a Self-sustained Electromechanical Seismographs With Time-Varying Stiffness" The Second International Conference of Natural & Applied Sciences, Al Aqsa University, Gaza, Palestine, May 30-31, 2011.