List of Articles Open Access Article Abstract Page Full-Text 1 - Optimizing the Airline Routing Cost using Linear Programming and PSO Algorithm Shahram Saeidi Sahar Khoshfetrat Open Access Article Abstract Page Full-Text 2 - An inverse DEA approach in the presence of undesirable outputs based on the directional distance function Javad Gerami Open Access Article Abstract Page Full-Text 3 - Surveying the Efficiency of Parliamentarians’ Suggestion about the Allocation of Credit to Eliminate Deprivation by Using the AHP Approach Saeed Papi Saeid Mehrabian Open Access Article Abstract Page Full-Text 4 - Ranking of the suitability of investment for online sales in different fields of clothing in Shiraz City using the Data Envelopment Analysis method Mehdi Abbasi Ali Doroodchi