The rates of length/width of 11 Hemudu ancient rices were compared with the O. rufipogon, O. sativa, sub sp. indica and japonica. In No. 7 and 10 ancient rices
The Laguerre Gauss-Radau interpolation is investigated. Some approximation results are obtained. As an example, the Laguerre pseudospectral scheme is constructe
In this paper we test different conjugate gradient (CC) methods for solving large-scale unconstrained optimization problems. The methods are divided in two grou
The Hamiltonian and multi-symplectic formulations for RLW equation are considered in this paper. A new twelve-point difference scheme which is equivalent to mul
A class of finite difference methods of first- and second-order accuracy for the computation of solutions to the quasilinear wave equations is presented. These