Abstract: Economic studies on migration of skilled labor are mainly related to those trained in the country of origin but are increasingly including students trained abroad that return or not to their home countries. There are incentives and constraints that are provided by both origin and...

The scientific practice, in the several social sciences, cannot be implemented without the researcher clearly defines in depth the theoretical and meta-theoretical foundations that underpinning the research. Similarly, the unambiguous understanding of the concepts, in view of the...