In this paper, an economic production quantity (EPQ) inventory model with interruption in process, scrap and rework is developed and analyzed. The inventory model is for multiple products and all products are manufactured in a unique machine. Obviously, the existence of only one machine results in limited production capacity and shortages. Therefore, shortages are permitted and fully backordere...

When demand exceeds supply, retailers hedge against shortages by placing multiple orders with multiple suppliers. This artificial growth in orders can severely affect suppliers, creating excess capacity, excess inventory, low capacity utilization, financial and reputation losses. This paper contributes to the understanding of order amplification caused by shortages, by providing a comprehensive...

This paper develops a fuzzy inventory model for variable deteriorating items with time dependent two parameter Weibull demand rate. Shortages are allowed and partially backlogged. Each cycle has shortages, which have been partially backlogged to suit present day competition in the market. This inventory system follows a time varying holding cost. Here, the retailer is allowed a trade credit off...

Inventory models with imperfect quality items are studied by researchers in past two decades. Till now none of them have considered the effect of substitutions to cope up with shortage and avoid lost sales. This paper presents an EOQ approach for inventory system with shortages and two types of products with imperfect quality by one way substitution. Our model provides significant advantage for...

conclusions the use of tdf in patients with hbeag-negative chb seemed to be a highly cost-effective strategy. compared with the other available medication options, tdf was the most cost-saving strategy. thus, tdf may be the best option as a first-line medication. patients can also be switched from other medications to tdf. results the results revealed that the tdf treatment strategy was more ef...