Risk-Adaptable Access Control (RAdAC) This paper considers the impediments of traditional access control approaches to sharing of. information. It describes a concept for an access control model that emulates real world decision-. making, considering operational need and security risk as part of each access control decision, and.
Turbulence can occur in the lowest part of the troposphere during the daytime when heating of the sun causes convective mixing of the air. Once the airplane rises above this turbulent boundary layer, the air becomes smoother. But other processes can also cause these up- and down-drafts.
Best Answer: Convection is caused by differences in air density (due to differences in temperature). Warm, lightweight air rises, while cold, dense air falls. So gravity causes convection when there is a difference in air density (temperature). What Causes Convection. No - mantle convection causes plate movement. Sometimes the plate movement it causes can affect the convection, such as when there is a subduction zone and a large amount of cold light crust is pushed down into the mantle.