Aissa Boukarou is Assistant professor at University of Science and Technology Houari Boumediene. His research interests lie in Partial differential equations, Harmonic analysis, Probability Theory, Stochastic partial differential equations, Numerical Analysis, Image processing. Khaled Zennir: was born in Algeria 1982. He received his PhD in Mathematics in 2013 from Sidi Bel Abbès University, Algeria (Assist. professor). He is now associate Professor at Qassim University, KSA. His research interests lie in Nonlinear Hyperbolic Partial Differential Equations: Global Existence, Blow-Up, and Long Time Behavior.