Demographic change is a complex phenomenon, but it has generally been accepted that having better employment opportunities and quality of jobs are among important factors that determine people's mobility. The purpose of this paper is to test the relationship between the increase in the number of...

Scaling is a general analytical framework used by many disciplines — from physics to biology and the social sciences — to characterize how population–averaged properties of a collective vary with its size. The observation of scale invariance over some range identifies general system types,...