introduction: emergency department is one of the most important hospital wards that offers emergency services to unstable patients 24 hours a day, 7 days a week. however, the way the services are offered reflects the general status of the hospital since patients with the most serious problems frequently refer to the emergency department. emergency department waiting time is one of the indices u...

the objective of this study is to measure the city of tehran’s environmental quality in 2006 (the last census year). primarily, with a comparative analysis of a variety of urban sustainability indicator models, a collection of 54 indicators have been chosen and categorized as indicators of increase or decrease in urban environmental quality in the form of a simple mathematical model. based o...