USDA Forest Service, Northern Research Station, Forest Inventory and Analysis Program, St. Paul, MN 55108, USA Nicholas School of the Environment, Duke University, Durham, NC 27708, USA USDA Forest Service, Northern Research Station, Forest Inventory and Analysis Program, Newtown Square, PA 19073, USA USDA Forest Service, Southern Research Station, Forest Inventory and Analysis Program, Knoxvil...

Besides service level and mean physical stock, customer waiting time is an important performance characteristic for an inventory system. In this paper we discuss the calculation of this waiting time in case a periodic review control policy with order-up-to-level S is used and customers arrive according to a Poisson process. For the case of Gamma distributed demand per customer, we obtain (appro...

This article presents a perishable inventory system under continuous review at a service facility in which a waiting area for customers is of finite size M. We assume that the replenishment of inventory is instantaneous. The items of inventory have exponential life times. It is assumed that demand for the commodity is of unit size. The arrivals of customers to the service station form a Poisson...

The pressure to reduce inventory investments in supply chains has increased as competition expands and product variety grows. Managers are looking for areas they can improve to reduce inventories without hurting the level of service provided. Two areas that managers focus on are the reduction of the replenishment lead time from suppliers and the variability of this lead time. The normal approxi...

despite all attractions of social participation in most parts of the rural development, due to the lack of practical approaches, it has just remained an advertising slogan. one of the necessities of rural development is the execution of plans which enjoy maximum social acceptance. one of these plans is locating and equipping high-order service settlements. using an operative process including e...

Inventory theory provides methods for managing and controlling inventories under different constraints and environments. We consider a class of production/inventory control problems that has a single product and a single stocking location, when a stochastic demand with a known non-stationary probability distribution is given. A control policy for this type of inventory system is the one where t...

Battery switching stations (BSS) provide a service that enables extending the traveling range of electric vehicles. Such stations may be the future equivalent of gas stations and they are currently being deployed in several countries. A BSS is a closed loop system that renews its inventory by recharging the batteries. We study the problem of scheduling the charging process in a BSS with the obj...

We analyze a multistage inventory system with limited production capacity facing stochastic demands. Each node follows a periodic-review base-stock policy for echelon inventory: in each period, each node attempts to produce enough material to restore cumulative downstream inventory to a fixed target level. We develop approximations to the key measures of interest (average inventories, average b...

InFocus is a worldwide leader in the digital display market. Despite its success in sales, the company posted a net loss in profit in year 2005. The major reasons are its high operating cost and high inventory level. After reviewing its reverse logistics system, we found that current policy to process the returned product does not reap the maximum amount of profit from returns. We proposed to a...