Abstract. In order to describe large transverse momentum (pT ) distributions observed in high energy nucleus-nucleus collisions, a stochastic model in the three dimensional rapidity space is introduced. The fundamental solution of the radial symmetric diffusion equation is Gaussianlike in radial rapidity. We can also derive a pT or radial rapidity distribution function, where a distribution of ...

The identification of maritime traffic complexity is important to guide surveillance operators towards the more critical areas for real-time monitoring situation. To identify and map effectively, this paper proposes a dynamic model based on radial distribution functions. For modelling complexity, three sub models are established first by addressing speed, course position ships. each sub-model, ...