List of Articles Open Access Article Abstract Page Full-Text 1 - A new multi-step ABS model to solve full row rank linear systems Mahmoud Paripour Esmaeil Babolian Leila Asadbeigi Open Access Article Abstract Page Full-Text 2 - Computational Method for Fractional-Order Stochastic Delay Differential Equations Behrouz Parsa Moghaddam Zeynab Salamat Mostaghim Elham Alsaddat Hashemi Zadeh Open Access Article Abstract Page Full-Text 3 - The use of concept mapping and Vee diagram to calculate the volume by the integral Maryam Attary Hooshang Akbari esmaeil yousefi Open Access Article Abstract Page Full-Text 4 - Topological structure on generalized approximation space related to n-arry relation Syyed Ba Ba Hosseini Open Access Article Abstract Page Full-Text 5 - Arens regularity of triangular Banach algebras related to homomorphisms sara behnamian amin mahmoodi mohamad reza mardanbeigi Open Access Article Abstract Page Full-Text 6 - Modeling the problem of selecting and assigning orders to suppliers based on the Goal planning, QFD and ANP combined approach Milad Tavakolian Mohammad Javad Ershadi Amir Azizi Open Access Article Abstract Page Full-Text 7 - Evolution of the first eigenvalue of buckling problem on Riemannian manifold under Ricci flow shahroud azami Open Access Article Abstract Page Full-Text 8 - ψ -amenability of some Banach-algebras Mohsen Ziamanesh Behrouz shojaee Open Access Article Abstract Page Full-Text 9 - Matching Integral Graphs of Small Order Somayeh Khalashi Ghezelahmad Open Access Article Abstract Page Full-Text 10 - Cloud modeling of quasi - order groups on general fuzzy automata Mohammad horry Open Access Article Abstract Page Full-Text 11 - Estimation of cost efficiency for firms in different technologies using data envelopment analysis Mohsen Hekmatnia Alireza Amirteimoori Sohrab Kordrostami Mohsen Vaez-Ghasemi Open Access Article Abstract Page Full-Text 12 - Design the bi-objective pharmaceutical supply chain network under uncertainty and considering the production, delivery, and drug perishable times meisam Jafari-Eskandari Mehrdad Mokhtari Mohammad Abbasi fard Open Access Article Abstract Page Full-Text 13 - Introducing a new inefficiency source due to inappropriate price selection in a Non-Competitive Environment in Data Envelopment Analysis (a case study in the Imam Khomeini Oil Refinery Company of Shazand in Iran) Elham Rezaei hezaveh Reza Fallahnejad Masoud Sanei Mohammad Izadikhah Open Access Article Abstract Page Full-Text 14 - A Free Line Search Steepest Descent Method for Solving Unconstrained Optimization Problems Narges Bidabadi