issue 4 publication date 2019-12-01

• Optimization the Availability of a System with Short Circuit and Common Cause ‎Failures‎
• Coincidence and ‎C‎ommon Fixed Point Results for $alpha$-$(psi,varphi)$-Contractive Mappings in Metric Spaces‎
• Estimating ‎C‎apacity Utilization in Two-Stage Production Systems: A Data Envelopment Analysis Approach
• An ‎E‎ffective Numerical Technique for Solving Second Order Linear Two-Point Boundary Value Problems with Deviating Argument
• A New Two-stage Iterative Method for Linear Systems and Its Application in Solving Poisson's Equation
• Constrained Non-Renewable Resource Allocation in Metagraphs with Discrete Random ‎Times
• Experimental Investigation of The Performance Response of A Spark Ignition Engine to Adding Natural Gas to Gasoline in Lean-Burn Condition
• Single ‎A‎ssignment Capacitated Hierarchical Hub Set Covering Problem for Service Delivery Systems Over Multilevel Networks
• Adaptive Steffensen-like Methods with Memory for Solving Nonlinear Equations with the Highest Possible Efficiency Indices