Finite element discretisation of the Dirichlet biharmonic problem by Bogner-Fox-Schmit(bicubic Hermite)elements leads to a symmetric positive definite coefficient matrix.
Krylov subspace recycling is useful for solving a sequence of slowly changing linear systems.It has been shown that recycled GMRES usually cannot be used in conjunction with shifted system techniques
The inverted device architecture of polymer solar cell(i-PSCs) is an attractive approach for its superior long-term stability compared to the initially implemented conventional device structures.