An activity can be seen as a resultant of coordinated movement of body joints and their respective interdependencies to achieve a goal-directed task. This idea is further supported by Johansson’s demonstrations that visual perception of the entire human body motion can be represented by a few bright spots which holistically describe the motion of important joints. Traditional dynamical modeling...

This paper presents the definition of k-error approximate entropy and proves its two basic properties, which measures the stability of chaotic pseudorandom sequences. Then the stabilities of Logistic, Hénon, Tent and Chebyshev maps are evaluated. Simulation results indicate that the approach is effective, which can distinguish the difference of stability of diverse chaotic sequences, and is an ...

We propose an entropy stable high-resolution finite volume scheme to approximate systems of two-dimensional symmetrizable conservation laws on unstructured grids. In particular we consider Euler equations governing compressible flows. The scheme is constructed using a combination of entropy conservative fluxes and entropy-stable numerical dissipation operators. High resolution is achieved based...