In the last two decades, the design of longitudinal studies, especially the sample size determination, has received extensive attention (Overall and Doyle 1994; Hedeker et al. 1999; Roy et al. 2007). However, there is little discussion on the relative efficiency of three strategies widely used to analyze randomized clinical trial data: a full longitudinal analysis using all data measured over t...

goal: the goal of this study was a comparion of evaluating iranian state university websites with webqem and wia .method: method of this research was a combination of descriptive and delphy servey. the statistical community was hundred websites of iranian state universities. data collection tools were checklists. descriptive statistics (mean, standard deviation) and analysis statistics (paired-...

data envelopment analysis (dea) as a non-parametric method for efficiency measurement allows decision making units (dmus) to select the most advantageous weight factors in order to maximize their efficiency scores.  in most practical applications of dea presented in the literature, the presented models assume that all inputs are fully desirable. however, in many real situations undesirable inpu...

The growing awareness on the multiple environmental impacts of livestock production has risen the necessity to widen the definition of efficiency to a multidimensional eco-efficiency concept. Our paper suggests a combined approach of a whole-farm agronomic model and frontier efficiency method to explore deeply the determinants of eco-efficiency. The whole-farm model used, GAMEDE, is randomly pa...

a correlational study was conducted to investigate the relationship between me duration of labor stages and the   newborn 's apgar score in women admitted to imam khomeini hospital (sari 1994).   a total of 1 20 primigravida women admitted for delivery wert' selected sequentially. the tool was a checklist   consisting of three parts . the first part inquired as to certain demographic ...

stroke scales can be classified as clinicometric scales and functional impairment, handicap scales. all studies describing stroke scales were reviewed by internet searching engines with the final search performed on january 1, 2013. the following string of keywords was entered into search engines; stroke, scale, score and disability. despite advantages of modified national institute of health s...

OBJECTIVES Although evidence is accumulating on the importance of a good night's sleep for healthy eating and activity behaviors, existing research has mainly been conducted in high-income, developed countries with limited sociocultural variability. This study is the first to examine the associations between sleep patterns and lifestyle behaviors in children from 12 countries in five major geog...

The paper introduces stochastic DEA with a Perfect Object (SDEA PO). The Perfect Object (PO) is a virtual Decision Making Unit (DMU) that has the smallest inputs and greatest outputs. Including the PO in a collection of actual objects yields an explicit formula of the efficiency index. Given the distributions of DEA inputs and outputs, this formula allows us to derive the probability distributi...

There is little consensus on the corporate diversification-efficiency relationship in the diversification literature. According to the corporate diversification, firms have a tendency to get more market share with diversifying in the local segment or in the international market. Theoretically, a contradictory exists between the profitable strategy and the value reducing strategy in the diversif...