Background and Aim: Lack of attention to hospital efficiency, in addition to increasing medical costs, limits universal access to health care. The purpose of this study was to draw a picture of the resource efficiency status of inpatient units and its changes over the years 2015 to 2018 in a large specialized hospital in Tehran. Methods: The study was a multiple cross-sectional and applied stud...

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...