The College of Science in the Department of Mathematics discussed a Ph.D. thesis entitled Instability of Incompressible Fluid Flow in Porous Medium and Fluid Layers for graduate student Shahzlan Shaker Hajoul. Its importance The thesis is to study three difficult issues: the instability of equilibrium flow in the porous medium flow, and the cohesion and flow of fluid flow within multimedia. The thesis stated how different parameters affect Internet communications.