This paper presents a detailed analysis of finding the periodic solutions for the high order Duffing equation x(2n)+ g(x) = e(t) (n ≥ 1). Firstly, we give a co
In this paper, the 2-D electrostatic field software, POISSON, is used to calculate the characteristic impedance of a BPM (beam position monitor) for a high curr
American pre-national literature is mainly Puritan literature.It reflected the Americans’ searching for their own way of expression.The predominant literary fo