List of Articles Open Access Article Abstract Page Full-Text 1 - Dual Frontiers in Non-convex Data Envelopment Analysis: Efficiency and In-efficiency Assessment and Stability Analysis Nasim Nasrabadi Sheyda Ayati 10.30495/jnrm.2021.15726 Open Access Article Abstract Page Full-Text 2 - Quasi-Analytical Solution of the Painleve Fuzzy Differential Equation Mohammad Adabi tabar Ali Hosseinzadeh Bahram Agheli Samaneh mohamadzadeh far 10.30495/jnrm.2021.15933 Open Access Article Abstract Page Full-Text 3 - On the non abelian tensor product of a group and its central automorphisms Monireh Seifi S. Hadi Jafari 10.30495/jnrm.2021.15934 Open Access Article Abstract Page Full-Text 4 - On the stability of unbounded differential equations in fuzzy k-normed spaces via fixed point method M. Madadi Reza Saadati 10.30495/jnrm.2021.17086 Open Access Article Abstract Page Full-Text 5 - Optical solitons and other solutions of the (2+1)-dimensional Kundu-Mukherjee-Naskar equation Kamyar Hosseini Mashallah Matinfar Mohammad Mirzazadeh 10.30495/jnrm.2021.17736 Open Access Article Abstract Page Full-Text 6 - Mittag-Leffler-Hyers-Ulam Stability For A First Order Delay Functional Differential Equation leyla Sajedi Nasrin Eghbali 10.30495/jnrm.2021.18168 Open Access Article Abstract Page Full-Text 7 - Approximate Answer to MP-MILP Problems Using McCormic Release of Modified Components Maryam Mahmoudi aghileh heydari Ali Karimpour Open Access Article Abstract Page Full-Text 8 - Modified ε-constraint method for bi-objective optimization: Reduce computational complexity and increase efficiency Armin Ghane Kanafi Open Access Article Abstract Page Full-Text 9 - Bi-objective mathematical modeling for a green last-mile transportation network with an automated parcel locker Amir-Hossein Zahedi-Anaraki Reza Tavakkoli-Moghaddam Ramin Sadeghian Open Access Article Abstract Page Full-Text 10 - some results on the forgotten index Farzaneh Falahati Nejad Open Access Article Abstract Page Full-Text 11 - on the nse of some particular groups Bahareh Asadian Neda Ahanjideh Open Access Article Abstract Page Full-Text 12 - Numerical solution of the SIR epidemic model using the non-standard finite difference method Abdulrahman Yaghoubi Hashem Saberi Najafi Open Access Article Abstract Page Full-Text 13 - Evaluating Forecasting ability of Stock Price by Grey Models, Static and Dynamic Neural Networks (Case Study: Insurance Companies of Tehran Stock Exchange) Hanif Heidari Seyed Rohollah Ahmadi Haji Abadi Mahboubeh Faghih Mohammadi Jalali Open Access Article Abstract Page Full-Text 14 - A new approach to apply the essential boundary conditions in element free Galerkin method for elliptic partial differential equations Ali Mesforush Komeil Izadpanah Open Access Article Abstract Page Full-Text 15 - Evaluate the efficiency of decision making units with classical model and goal programming data envelopment analysis and output correlation with statistical methods in Ghavamin Bank. golamreza Panahandeh khojin Abbass Toloie Eshlaghy Mohammad Ali Afshar Kazemi