List of Articles Discrete optimization Open Access Article Abstract Page Full-Text 1 - Sizing optimization of truss structures with discrete design variables using combined PSO algorithm with Special Particles Method Ali Gheibi Reza SojoudiZadeh Hadi Azizian Mahdi Gheibi 10.22094/joie.2024.1973228.2014 Open Access Article Abstract Page Full-Text 2 - ککک طاها مصطفایی فرزین مدرس خیابانی نیما جعفری نویمی پور بهروز دانشیان Open Access Article Abstract Page Full-Text 3 - A dynamic programming approach for solving nonlinear knapsack problems E Jahangiri F Ghassemi-Tari Open Access Article Abstract Page Full-Text 4 - A ($2-\varepsilon$)-approximation ratio for vertex cover problem on special graphs N. Yekezare M. Zohrehbandian M. Maghasedi 10.30495/jlta.2023.703516