aim : this study compared pr and nb in predicting hcv patient costs. the objective of this study was to predict the direct cost of the hcv patient in iran. background : hepatitis c virus (hcv) is a common and expensive infectious disease in iran. cost associated with hcv and its complications has not been well characterized. analysis of cost data is important in providing consistent information...

linear programming is a helpful and applied method for diet formulation based on minimum cost, but the minimum cost does not always mean maximum profit. this study was carried out to introduce a new diet formulation method based upon maximum profit to be replaced for minimum cost method. a total of 400 one-day-old broiler chicks (ross 308) were employed in the study. all broilers were fed simil...