The modified weighted slab technique: Models and results

In an attempt to understand the source and propagation of Galactic cosmic r ays, we have employed the modified weighted slab technique along with recen t values of the relevant cross sections to compute primary to secondary rat ios including B/C and sub-Fe/Fe for different Galactic propagation models. The models that we have considered are the disk-halo diffusion model, the d ynamical halo wind model, the turbulent diffusion model, and a model with m inimal reacceleration. The modified weighted slab technique will be briefly discussed and a more detailed description of the models will be given. We will also discuss the impact that the various models have on the problem of anisotropy at high energy and discuss what properties of a particular mode l bear on this issue.