selecting an appropriate manufacturing machine is a very important and complex problem for firms, which usually have to deal with both qualitative and quantitative criteria. taking into account the differences among machines in terms of cost, speed, quality and after sale services, type and number of machines are important parameters to consider. therefore, the goal of this paper is to propose ...

n engl j med 371;24 nejm.org december 11, 2014 2331 5. Pfeffer MA, Brenner BM, McMurray JJ. Aliskiren in type 2 diabetes and cardiorenal end points. N Engl J Med 2013;368:1065-6. 6. Luciano RL, Dahl NK. Extra-renal manifestations of autosomal dominant polycystic kidney disease (ADPKD): considerations for routine screening and management. Nephrol Dial Transplant 2014;29:247-54. 7. Chapman AB, To...

Longevity is a blessing as long as good health is not lost. However, the tendency to have a decline on normal physiological activities is inevitable because of the natural processes of degeneration at all levels: molecular, cellular and organic. Hence, the elderly people frequently suffer from cardiovascular problems and skeletal deteriorations that gradually develop to disabilities. Awareness ...

in the real world, risk and uncertainty are two natural properties in the implementation of mega projects. most projects fail to achieve the pre-determined objectives due to uncertainty. a linear integer programming optimization model was used in this work to solve a problem in order to choose the most appropriate risk responses for the project risks. a mathematical model, in which work structu...

concurrently, organizations must respond effectively to social expectations and moral law and to achieve success in all areas and by respecting professional ethics adopt an appropriate procedure to achieve these expectations align with organizational goals to facilitates promotion of social accountability and realization of higher goals. in this study, we have formulated a framework by reviewin...

This study aimed at presenting a method for formulating optimal production, repair and replacement policies. The system was based on the production rate of defective parts and machine repairs and then was set up to optimize maintenance activities and related costs. The machine is either repaired or replaced. The machine is changed completely in the replacement process, but the productio...

In this paper, a multivariate fundamental skew probit (MFSP) model is used to model correlated ordinal responses which are constructed from the multivariate fundamental skew normal (MFSN) distribution originate to the greater flexibility of MFSN. To achieve an appropriate VC structure for reaching reliable statistical inferences, many types of variance covariance (VC) structures are considered ...