This article deals with an economic order quantity (EOQ) inventory model for items with imperfect quality in fuzzy stochastic environment, wherein shortages are allowed and completely backlogged. Fuzzy stochastic environment means linguistic ‘impreciseness’ and statistical ‘uncertainty’ both appear simultaneously. Due to uncertain demand trend, imperfect production process, natural disaster etc...

Uncertainty theory has got quite attention after it was pioneered by Baoding Liu in 2007. Uncertainty is the newest area among the concepts to express imprecise quantities which can be expressed by the ambiguity of human language. Such an unpredictable value can be neither accurately described by probability theory nor fuzzy logic. In inventory models, costs are very prominent part of the syste...

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...

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 classical economic order quantity model is extended to the case where items may be acquired from various suppliers. It assumed that any lot size received a supplier contains perfect and imperfect quality items. percentage of in random variable having known probability distribution. are detected through 100% screening process conducted at start inventory cycle. When concluded, sold one batch...

The EOQ and EPQ models with linear and fixed backorder costs are newly analyzed and all formulae are proven using only algebra. Two cases are identified, where backorders should and should not be allowed. The results are shown to include several known special cases. r 2004 Elsevier B.V. All rights reserved.

We consider the jointly replenishing N identical firms that operate under an EOQ like setting using a non-cooperative game. In this game, each firm bids how much it is willing to pay per unit of its replenishment and a service provider determines the frequency of the joint orders. We characterize the equilibrium under full and asymmetric information.

Determining the optimal slaughter age of fast-growing animals regarding mortality rates and breeding costs plays an important major role for companies that benefit from their meat. Additionally, effects carbon dioxide (CO2) emissions during growth cycle are a significant concern governments. This study proposes economic order quantity (EOQ) growing items with function under sustainable green po...