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in this paper, different input-oriented ratio-based dea (dea-r-i) models are proposed. by presenting the envelopment-additive-enhanced russell model based on the dea-r-i form, each decision making unit is evaluated and its efficiency score is calculated. also, by presenting the central resource allocation model based on the dea-r-i form, a suitable benchmark for all dmus is proposed by solving ...

correlation between sacral ratio and bowel function as well as fecal continence has been well documented in patients with anorectal malformations (arms). one hundred and twenty children with arms were investigated in this study. sacral ratio (sr) was measured from pelvic x-rays of patients. among these, 52 patients (43%) had no pelvic x-ray and were excluded from this study. sr was measured by ...

abstract the aim of this study was to determine the input–output energy consumption in different levels of tomato production. the data used in the study were obtained from 140 tomato growers in different villages of marand township by using a face to face questionnaire. the results showed that the amount of energy consumed in tomato production was 65.2 gjha-1 which about 51% of this was generat...