Itsekkyys valtaa alaa aikuiskasvatuksessa

Alaa Shaban-Final Paper (2)

The strength and durability of concrete are the most essential parameters for determining structural performance of any concrete structure. Thus, there has been always a need to develop an appropriate test method to evaluate and identify concrete properties in various structural members. In recent years, several researchers have strived to exploit hyperspectral technology as a non destructive t...

AlAA 96 - 2089 Numerical Solution of Incompressible

A fractional step method for the solution of steady and unsteady incompressible Navier-Stokes equations is outlined. The method is based on a finitevolume formulation and uses the pressure in the cell center and the mass fluxes across the faces of each cell as dependent variables. Implicit treatment of convective and viscous terms in the momentum equations enables the numerical stability restri...

AlAA 94-0835 Numerical Simulations of Drop Collisions

Three-dimensional simulations of the off-axis collisions of two drops are presented. The full Navier-Stokes equations are solved by a FrontTrackingFinite-Difference method that allows a fully deformable fluid interface and the inclusion of surface tension. The drops are accelerated towards each other by a body force that is turned off before the drops collide. Depending on whether the interface...

Megan K . O ' Brien and Alaa A . Ahmed Does risk - sensitivity transfer across movements ?

AlAA 97-2762 Inflatable Solar Sails for Low-Cost Robotic Mars Missions

This paper presents an evaluation of the use of solar sails based on inflatable-structures technologies to perform low-cost robotic planetary missions. We show that there is a significant potential synergism between the emerging technologies of microspacecraft and inflatable solar sails that offer the unique capability of performing planetary science missions using a small, low-cost launch vehi...