Purpose This paper aims to present a detailed mechanical design of seven-degrees-of-freedom mobile parallel robot for the tungsten inert gas (TIG) welding and machining processes in fusion reactor. Detailed is presented both kinematic dynamic behaviors are studied. Design/methodology/approach First, model was created computer-aided (CAD) software, then simulation optimization were completed mee...

Abstract. A brief introduction to the phenomena of vacuum neutrino oscillations and resonant flavour conversion is presented with a heavy pedagogic leaning. Variants of these ideas, e.g., neutrino helicity flip in a magnetic field, violation of the equivalence principle, etc. are outlined. A few vexing issues pertaining to the quantum mechanics of neutrino oscillations are discussed. Expectatio...

We present a possible collective gluon emission eeect based upon a string-like scenario (available if the QCD vacuum works like a color-superconductor type II, i.e. when the color force elds work like vortex-lines) and provide some detailed predictions on the Cronin eeect, as well as on an increased (mini)jet production in the center of phase-space in high energy heavy ion collisions.

Within the Hamiltonian approach to Yang-Mills theory in Coulomb gauge the ghost and gluon propagators are determined from a variational solution of the Yang–Mills Schrödinger equation showing both gluon and heavy quark confinement. The continuum results are in good agreement with lattice data. The ghost form factor is identified as the dielectric function of the Yang–Mills vacuum and the Gribov...

The Rubakov-Callan effect is reexamined by considering the gravitational effects caused by the heavy monopole mass. Assuming that the Higgs vacuum expectation value is as large as (or larger than) the Planck mass, we argue that the calculational scheme of Rubakov and Callan may be extended in the presence of curved background field. It is argued that the density of the fermion condensate around...