this paper proposes an alternative approach for efficiency analysis when a set of dmus uses interval scale variables in the productive process. to test the influence of these variables, we present a general approach of deriving dea models to deal with the variables. we investigate a number of performance measures with unrestricted-in-sign interval and/or interval scale variables.

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background : traumatic brain injury (tbi) is known as one of the most important causes of mortality in middle-aged population. the aim of this study was to evaluate the effects of gabapentin in improvement of consciousness level in these patients. methods : this randomized clinical trial was performed in march 2008 to sept...

because of the need to develop specific measurement scales for different services industries, this study aimed to empirically develop a reliable and valid model specifically for measuring mobile telecommunication service quality. a multidimensional measurement model (ms-qual) has been proposed based on an extensive literature review and then, to assess the model validity, convergent and discrim...

introduction: this study aims at determining and comparing braden and waterlow predictive tools as well as determining the cut off point of these scales. methods: this was a cross-sectional study which was carried out on 1864 patients admitted to imam hossein hospital in shahroud. the data collection instruments included braden and waterlow risk–assessment scales and a skin assessment tool. the...

objective: bone marrow transplantation is considered one of the main procedures used in the treatment of both malignant and non-malignant diseases. psychological factors after bone marrow transplantation have an important role in the survival of the patients undergoing this procedure. method: in the present study, some parameters including depression, anxiety and cognition were assessed during ...

data envelopment analysis (dea) models with interval inputs and outputs have been rarely discussed in dea literature. this paper, using the enhanced russell measurement proposes an extended model which permits the presence of interval scale variables which can take both negative and positive values. the model is compared with most well-known dea models of which include the ccr model, the bcc mo...