In this study, the density dependent nonlinear reactiondiffusion equation, which arises in the insect dispersal models, is solved using the combined application of differential quadrature method(DQM) and implicit Euler method. The polynomial based DQM is used to discretize the spatial derivatives of the problem. The resulting time-dependent nonlinear system of ordinary differential equations(OD...

Abstract The goal of present study is determining subsurface structural elements by analyzing geomagnetic data sets aiming to examine their impacts on geological surface structures characterizing the western region in Beni-Suef Governorate, Western Desert, Egypt. A land-magnetic survey conducted two exceedingly sensitive proton magnetometers measure total intensity field at under investigation....

When a continuous-time diffusion is observed only at discrete times with measurement noise, in most cases the transition density not known and likelihood form of high-dimensional integral that does have closed-form solution difficult to compute accurately. Using Hermite expansions deconvolution strategy, we provide general explicit sequence contrast for noisy discretely processes. This work all...