Prof. at the Universidade da Beira Interior, Covilhã, Portugal. Associate researcher at the Centre for Management Studies of Instituto Superior Técnico, CEG-IST, Universidade de Lisboa, NECE - Research Center in Business Sciences & Centre for Mechanical and Aerospace Science and Technologies, C-MAST - UBI, Portugal. Professor vinculado at the Instituto Multidisciplinar de Empresa, Universidad de Salamanca, Spain.