Nouvelle Approche de Mesure de l’Ouverture Commerciale dans les Modèles de Gravite = New Approach to Measure The Opening in Business Models of Gravity

In this work we tried to examine the relationship between commercial openness and some of its determinants which can be analyzed by models of gravity. In this regard, we reached the investigation by both empirical and theoretical perspective. The first part was devoted to the analysis of diverse measurements of openness especially the new approach, whereas in the second part we examined the previous relationship by using two different measures of the openness through econometric modelling of panel composed of countries in the world via gravity models.