in this paper, a facility location problem of distribution systems, as one of the important and strategic issues in supply chain management, has been studied in a three-level supply chain under a stochastic condition. for this purpose, a two-stage mathematic model has been proposed for the location-allocation problem of distribution systems with regard to backup facilities for disrupting wareho...

Internet provides a huge amount of data, but this information cannot be exploited to make decisions. An integrated view over multiple, autonomous and heterogeneous Web sources can be defined as a data warehouse which collects relevant data and keeps history (evolutions) of data to improve decision making. A data warehouse exploits large volumes of data to turn passive information into useful ac...

A two-warehouse inventory model with deteriorating items and rework process time varying demand rate is presented. The Last-In-First-Out (LIFO) First-In-First-Out (FIFO) policies are considered the assumption that holding cost higher in rented warehouse (RW) compared to owned (OW). aim of proposed determine optimum values a production cycle will minimise total relevant cost, TRC*. We have utili...

Many studies focus on inventory systems to analyze different real-world situations. This paper considers a two-echelon supply chain that includes one warehouse and one retailer with stochastic demand and an up-to-level policy. The retailer’s lead time includes the transportation time from the warehouse to the retailer that is unknown to the retailer. On the other hand, the warehouse is unaware ...

Creating the Data Warehouse Data Model Moral: A good data warehouse model is a synthesis of diverse non-traditional factors. A data warehouse model must be comprehensive, current and dynamic, and provide a complete picture of the physical reality of the warehouse as it evolves. The data warehouse database schema should be generated and maintained directly from the model. The model not just a de...

‎this paper proposes a multi-supplier multi-product inventory model in which the suppliers have unlimited production capacity, allow delayed payment, and offer either an all-unit or incremental discount. the retailer can delay payment until after they have sold all the units of the purchased product. the retailer’s warehouse is limited, but the surplus can be stored in a rented warehouse at a...

in this paper, a multi-product continues review inventory control problem within batch arrival queuing approach (mqr/m/1) is modeled to find the optimal quantities of maximum inventory. the objective function is to minimize summation of ordering, holding and shortage costs under warehouse space, service level, and expected lost-sales shortage cost constraints from retailer and warehouse viewpoi...

This paper considers a single-item, two-echelon, continuous-review inventory model. A number of retailers have their stock replenished from a central warehouse. The warehouse in turn replenishes stock from an external supplier. The demand processes on the retailers are independent Poisson. Demand not met at a retailer is lost. The order quantity from each retailer on the warehouse and from the ...