In this work, we analyse a pair of two-dimensional coupled reaction-diusion equations known as the Gray-Scott model, in which spot patterns have been observed. We focus on stationary patterns, and begin by deriving the asymptotic scaling of the parameters and variables necessary for the analysis of these patterns. A complete bifurcation study of these solutions is presented. The main mathematic...

in this paper, we use game theory to describe the emergence of self-organization and consequent pattern formation through communicative cooperation in bacillus subtilis colonies. the emergence of cooperative regime is modelled as an n-player assurance game, with the bacterial colonies as individual players. the game is played iteratively through cooperative communication, and mediated by exchan...

The paper presents the core concepts of the Polish Spatial Information System, reflecting the results of investigations performed within the framework of the research project conducted at the Institute of Geodesy and Cartography. The architecture of the Polish Spatial Data Infrastructure with regard to data flow and data access is presented. Describing the System the author stresses the importa...