Interactive visualization of three-dimensional pipelines using Ajax and X3D
The developments of three dimensional pipelines are mainly on the COM component of GIS software, three dimensional ::: visualization library and client-sever software architectures. These methods are still not sufficient in supporting remote ::: management of 3D pipelines, because the client and the server involved in the process may require two-way ::: communication frequently as well as modeling results visualization intuitively. In this paper we proposed a solution to 3D ::: pipeline management system, which provides convenience of operation, exactness of position and rapidness of update for ::: the pipelines in the web context. We realized web-based interactive visualization for 3D pipelines using AJAX and X3D.
Abstract In many applications, such as atmospheric chemistry, large systems of ordinary differential equations (ODEs) with both stiff and nonstiff parts have to be solved numerically. A popular approach in such cases is to integrate the stiff parts implicitly and the nonstiff parts explicitly. In this paper we study a class of implicit-explicit (IMEX) linear multistep methods intended for such applications. The paper focuses on the linear stability of popular second order methods like extrapolated BDF, Crank-Nicolson leap-frog and a particular class of Adams methods. We present results for problems with decoupled eigenvalues and comment on some specific CFL restrictions associated with advection terms.