List of Articles Open Access Article Abstract Page Full-Text 1 - Availability Optimization of a system With k-out-of-n Sub-systems Considering Different Types of Components Failure Using BBQ Algorithm مانی شریفی محمدرضا شهریاری شاهین خوش نیت Open Access Article Abstract Page Full-Text 2 - Coincidence and Common Fixed Point Results for $\alpha$-$(\psi,\varphi)$-Contractive Mappings in Metric Spaces J. Esmaily S. M. Vaezpour R. Saadati Open Access Article Abstract Page Full-Text 3 - Estimating Capacity Utilization in Two-Stage Production Systems: A Data Envelopment Analysis Approach L. Zeinalzadeh R. Kazemi Matin AR. Amirteimoori Open Access Article Abstract Page Full-Text 4 - An Effective Numerical Technique for Solving Second Order Linear Two-Point Boundary Value Problems with Deviating Argument M. Khaleghi E. Babolian S. Abbasbandy Open Access Article Abstract Page Full-Text 5 - A New Two-stage Iterative Method for Linear Systems and Its Application in Solving Poisson's Equation F. Shariffar ‎A. H. Refahi Sheikhani Open Access Article Abstract Page Full-Text 6 - Constrained Non-Renewable Resource Allocation in Metagraphs with Discrete Random Times N. Akhoundi Shiviyari S. S. Hashemin Open Access Article Abstract Page Full-Text 7 - Experimental study of The Performance and e xhaust gas emissions Response of A Spark Ignition Engine to Adding Natural Gas to Gasoline in CR=11 S. K. Yekani E. Abdi Aghdam F. Sadegh Moghanlo Open Access Article Abstract Page Full-Text 8 - Single Assignment Capacitated Hierarchical Hub Set Covering Problem for Service Delivery Systems Over Multilevel Networks E. Korani A. R. Eydi I. Nakhai Kamalabadi Open Access Article Abstract Page Full-Text 9 - Adaptive Steffensen-like Methods with Memory for Solving Nonlinear Equations with the Highest Possible Efficiency Indices M‎. ‎J‎. Lalehchini T. Lotfi K. Mahdiani