Abstract We reanalyze the problem of a 1D Dirac single particle colliding with electrostatic potential step height V 0 positive incoming energy that tends to limit point so-called Klein zone, i.e. E → − m c 2 , for given . In such case, is actually an impenetrable barrier. fact, + relativistic ( < ), maximum value can reach and ensures perfect impenetrability Nevertheless, we note that, unli...

This paper presents a novel formulation for static limit analysis of structures, which the Airy stress function is approximated using stabilized Radial Point Interpolation Mesh-free method (RPIM). The field determined as second-order derivatives function, and equilibrium equations are automatically satisfied priori. so-called Stabilized Conforming Nodal Integration (SCNI) employed to ensure pre...