tendance (2) test (2) changement technologique (2) racine (2) recherche (2) produit (2) modèle (2) méthodologie (2) innovation (2) effet (2) croissance économique (2) développement économique (2) Testing (2) Development (2) Treatment (2) Methodology (2) Group of Seven countries (2) Testing (2) Technological innovations (2) Statistics (2) Statistical methods (2) Series (2) Research (2) Perspective (2) Must (2) Methodology (2) Manufactures (2) Intellectual property (2) Hypothesis (2) Growth (2)