oscillation space
1.Abstract: On the basis of the space structure model,the behavio r of natural oscillation of open pile-supported beam-slab wharf and its dynamic response to wave forces were calculated and analyzed.It is pointed out that dyna mic analysis should be made when an open pile-supported wharf is designed.
2.We investigate the forced oscillation for a class of neutral delay parabolic partial differential equations of the form:t(u(x,t)-pu(x,t-τ))∑rk=1a_k(t)Δu(x,t-ρ_k(t))+∑mj=1q_j(t)u(x,t-σ_j(t))=e(x,t),where(x,t)∈Ω×[0,∞)≡G,Ω is a bounded domain in R~nwith a piecewise smooth boundary Ω,and Δ is the Laplacian in Euclidean n-space R~n with three differential boundary conditions, and the forcing term e(x,t) is a oscillatory function defined on G.Some new oscillatory criteria are obtained.Our results extended some known conclusions.
