Shaymaa Dheyaa Jasim Al-obaidi and Prof. Dr. Thaer Sabri Mahmoud Al-Ghabban 2022. THE EFFECT OF RATIONING THE PRODUCTION COSTS ON ENHANCING PROCESS DESIGN TO ACHIEVE COMPETITIVE ADVANTAGE: AN APPLIED RESEARCH IN THE IRAQI MECHANICAL FACTORY OF CARPETS. European Journal of Research Development and Sustainability. 3, 4 (Apr. 2022), 137-149.