The classical economic production quantity (EPQ) model assumes that items produced are of perfect quality and the production rate is constant. However, production quality depends on the condition of the process. Due to process deterioration or other factors, the production process may shift and produce imperfect quality items. These imperfect quality items sometimes can be reworked and repaired...

The primary objective of this idea is to create an EOQ model for imperfectly-quality products that takes into account the combined effects proportionate discount, backorder, clustering with association rule mining, and cross-selling. ordering policy considering cross-selling effect was first calculated in paper. benefits become especially evident when selling low-quality products. Data mining m...

In this note, we correct some typos that appeared in Yassine et al. {Yassine, A., Maddah, B., Salameh M., Disaggregation and consolidation of imperfect quality shipments in an extended EPQ model, International Journal of Production Economics 135 (2012) 345–352}, specifically, for one of their models that considered consolidating shipments of imperfect quality items across multiple production cy...

osteogenesis imperfecta is a rare inherited connective tissue disorder with an expression that varies from mild to severe disease affecting bone, sclera and middle ear. fertility is preserved, especially in those patients with type 1. we present hereby a pregnant woman with osteogenesis imperfecta that had over 30 fractures in long bones and vertebrae. the object of this report was to determine...