List of Articles Efficiency model Open Access Article Abstract Page Full-Text 1 - Content Analysis of Investment Efficiency Measurement Methods (In Internal Research) Amir Dolatkhah Sayed Ali Vaez Mehdi Basirat 10.30495/jdaa.2023.698890 Open Access Article Abstract Page Full-Text 2 - The efficiency model of construction projects in sports with the approach of education samaneh Bakhshi moghaddam Mohammad Reza Esmaeilzadeh Ghandehari Hossein Peymanizad Hassan Fahim Devin