Assistant Lecturer
1977 – 1978
University of Mosul, Iraq
Assistant Lecturer
1978 – 1980
Military Technical College, Iraq
Assistant Lecturer
1980 – 1985
University of Mosul, Iraq
Lecturer
1990 – 1992
University of Mosul, Iraq
Assistant Professor 1992-1997 Jordan University of Science &
Technology, Jordan
Assistant Professor
1997-1998
College of Education , Sur, Oman
Assistant Professor
1998 – 2003
University of Sharjah, Sharjah, U.A.E.
Associate Professor
2003 ----
University of Sharjah, Sharjah, U.A.E.
1. Abdullah H. K.; Oscillation Conditions of second Order Non-Linear Differential Equations, International Journal of Mathematical Sciences, vol.34, No.1, pp 1490 – 1497(2014).
2. Abdullah H. K.; The Oscillation of the Non-Linear Differential Equation , International Journal of Pure and Applied Mathematics (IJPAM), vol.94, No.1, pp 1 – 7 (2014)
3. Abdullah H. K., Sufficient Conditions for Oscillation of a Class of Lienard Equation, Nonlinear Analysis and differential Equations, vol. 4, No.5, pp235 – 241 (2016).
4. Abdullah H. K.; Oscillation conditions for a Class of Lienard Equations, International Journal of mathematical and Computational Methods, vol.1, pp325 – 329 (2016).
5. Abdullah H. K.; Periodic Solutions of a Class of a Generalized Lienard Equation, Applied Mathematical Sciences, vol. 11, No. 20, pp985 – 995 (2017).
6. Al-Dosary K. T., Abdullah H. K; Period Monotonicity for Weight-Homogeneous Differential Systems, International Journal of Mathematical Research, vol. 6, No. 2, pp 46 – 52(2017).