Shahid Beheshti University Journal of Industrial Management Perspective 2251-9874 3 4 2014 02 20 Emergency Department Simulation and Ranking Its Improving Scenarios using AHP – PROMETHEE Method Emergency Department Simulation and Ranking Its Improving Scenarios using AHP – PROMETHEE Method 137 164 87302 FA Mostafa Kazemi Associate Professor, Ferdowsi University of Mashhad. 0000-0002-5084-5752 Ali Sibeveih MA, Ferdosi Mashhad University. Mohammad Ranjbar Associate Professor, Ferdosi Mashhad University. Zahra Naji Azimi Associate professor, Ferdowsi University of Mashhad. Razieh Karimi Nurse Expert, Ghaem Hospital, Mashhad. Journal Article 2019 09 27 Due to the increasing health care organizations costs, their requirement to increase the quality, and also the complexity of their systems, the issue of the change and improvement to the systems has got really important. It was crucial to know which of methods and scenarios for the change of the systems, especially in the resources, lead to better conditions and this topic caused major issues. In this regard, discrete – event simulation as one of the decision making tools in operations research based on random data, has significantly helped policy makers and a managers. In this study, firstly, the key performance measures of Ghaem hospital emergency system using past publications and experts’ suggestions were identified. Then this system was modeled and simulated using Arena software. After weighting the criteria by AHP method, the scenarios of the experts were defined<span lang="FA" dir="RTL">. </span> Finally they were ranked using PROMETHEE method and the most suitable scenario was determined. Due to the increasing health care organizations costs, their requirement to increase the quality, and also the complexity of their systems, the issue of the change and improvement to the systems has got really important. It was crucial to know which of methods and scenarios for the change of the systems, especially in the resources, lead to better conditions and this topic caused major issues. In this regard, discrete – event simulation as one of the decision making tools in operations research based on random data, has significantly helped policy makers and a managers. In this study, firstly, the key performance measures of Ghaem hospital emergency system using past publications and experts’ suggestions were identified. Then this system was modeled and simulated using Arena software. After weighting the criteria by AHP method, the scenarios of the experts were defined<span lang="FA" dir="RTL">. </span> Finally they were ranked using PROMETHEE method and the most suitable scenario was determined. https://jimp.sbu.ac.ir/article_87302_8493d25b9932bc97b2c8c9cd06ee150d.pdf