Abstract
This paper presents a modeling approach, followed by entropy calculations of the dynamics of large systems of interacting active particles viewed as livinghence, complexsystems. Active particles are partitioned into functional subsystems, while their state is modeled by a discrete scalar variable, while the state of the overall system is defined by a probability distribution function over the state of the particles. The aim of this paper consists of contributing to a further development of the mathematical kinetic theory of active particles.