Through the analysis on deformation property and the basic constitution of different stability evolution stages of the accumulative-formation slope, it is found that the surface displacement vector angles of slope are constituted of whole sliding vector angles compressive displacement vector angle, plastic deformation vector angle and creeping deformation vector angle.

However,the universal banking system has also its congenital “internal instability”which could lead to conflicts of interest and“inside trading”.

A special interpolation of the element displacement field using the displacement along each side of element is proposed and a new C1 conforming quadrilateral thin plate bending element is developed.