A series of closely related lattice restricted primitive ionic models were studied by grand canonical Monte Carlo simulations. The ratio of ionic diameter to lattice spacing, , was assigned integer values from 1 to 5. Our results for the = 1 model provide support for the suggestion of Dickman and Stell that there is a tricritical point involving transitions between a disordered and an antiferro...

The phase behavior of the lattice restricted primitive model (RPM) for ionic systems with additional short-range nearest neighbor (NN) repulsive interactions has been studied by grand canonical Monte Carlo simulations. We obtain a rich phase behavior as the NN strength is varied. In particular, the phase diagram is very similar to that of the continuum RPM for high NN strength. Specifically, we...

In multi-resolution data handling, a less detailed structure is often derived from a more detailed one by amalgamating elements which are indistinguishable at the lower level of detail. This gathering together of indistinguishable elements is called a granulation of the more detailed structure. When handling spatial data at several levels of detail the gran-ulation of graphs is an important top...