https://drive.google.com/open?id=0B4YlaOLvckmKfl9rSUZmNl9LZDhXZkl3VXkxSS1MWEVkU0toU0xZblR0eXN6YnVWMVhGTVU&authuser=0
Particles system simulations allow us to set a controlled and defined model to simulate certain behaviours (random movement, interaction between individuals, attractor areas,etc.) within an ensemble of particles, making possible to change several parameters as dimension, speed, mass to represent different physical phenomena.