Fill rate of single-stage general periodic review inventory systems

نویسندگان

  • Jiang Zhang
  • Jun Zhang
چکیده

We consider a single-stage inventory system supplying external demands and receiving stocks from an ample supply. Time is divided into periods of …xed length; a period can be a day or a week depending on the situation. In each period, demands arrive and are either …lled or backlogged. The system operates under a general periodic-review base-stock policy. Under this policy, the inventory position (de…ned as amount on-hand + on-order backlog) is reviewed once every R periods. If the inventory position is below a base-stock level , an order is placed to raise the inventory position back to . An order placed at the beginning of a review period t is delivered at the beginning of period t + L (L and R are positive integers). Random demand occurs after the order placed L periods ago arrives in a period. The demands in di¤erent periods are assumed to be independent and identically distributed. All excess demands are backlogged. The inventory system we study in this paper is widely used in practice and is discussed under the names “FixedTime Period Models” [6], “Periodic Review (P) Systems” [9], and so on in popular introductory operations management textbooks. When R = 1, the general periodic review policy becomes the well studied periodic-review base-stock policy in the research literature. This paper studies the system’s …ll rate, the long-run average fraction of demand satis…ed immediately using on-hand stocks. We develop a formula for the exact …ll rate for general demand Corresponding author. Tel: +1 972 883 6288; fax: +1 972-883-2089. Email address: [email protected].

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The order and volume fill rates in inventory control systems

This paper differentiates between an order (line) fill rate and a volume fill rate and specifies their performance for different inventory control systems. When the focus is on filling complete customer orders rather than total demanded quantity the order fill rate would be the preferred service level measure. The main result shows how the order and volume fill rates are related in magnitude. E...

متن کامل

Optimal Control of Serial, Multi-Echelon Inventory/Production Systems with Periodic Batching

We consider a single-item, periodic-review, serial, multi-echelon inventory system, with linear inventory holding and penalty costs. In order to facilitate shipment consolidation and capacity planning, we assume the system has implemented periodic batching: each stage is allowed to order at given equidistant times. Further, for each stage except the most downstream one, the reorder interval is ...

متن کامل

A Multi-Item Spare Parts Inventory Model with Customer Differentiation

We consider a single warehouse where spare parts of multiple stock-keeping units are kept on stock to serve customers with (close-to-)identical machines. Customers are divided into multiple customer classes, and a target aggregate fill rate is set per class. In order to get differentiated service levels, critical level policies are assumed. We formulate a multi-item, single-stage spare parts in...

متن کامل

Determining the fill rate for a periodic review inventory policy with capacitated replenishments, lost sales and zero lead time

In this paper we consider a periodic review order-up-to inventory system with capacitated replenishments, lost sales and zero lead time. We consider discrete demand. It is shown that the initial stock levels of the different review periods form aMarkov chain andwe determine the transitionmatrix. Furthermore we study for what probabilitymass functions of the review period demand theMarkov chain ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Oper. Res. Lett.

دوره 35  شماره 

صفحات  -

تاریخ انتشار 2007