The objective of this study is to develop an ordering policy
which will minimize the total cost associated with maintaining an
inventory under active constraints. Previous work in this area has
concentrated on the application of either the Lagrangian multiplier
technique or the exchange curve which allows non-linear trades-offs
between...
Every inventory system requires answers to two basic questions:
when to order and how much to order.
In this paper we have described and compared four alternate
methods for obtaining the answers for these two questions. Four different
types of demand distribution during the lead time are considered:
normal, exponential,...
In this paper, we discuss extensions of two coordinated ordering
methods which reduce inventory costs for multi-item systems.
Goyal's method, which is useful for constant demand, decreases cost
by assigning an order interval for each item, and an optimum number
of purchase orders per period. Goyal's method is modified to...
Stock loss and out-of-stocks are outcomes of poorly designed inventory management systems and can lead to significant revenue losses. Inventory management systems (IMS) based on radio frequency identification (RFID) have the potential to minimize these losses if they are properly designed and deployed. However, the placement of RFID readers to...
After a mobile communication device (MCD), such as a smartphone or tablet, has been sold to the public, the customer may find that there is a defect. Each MCD is sold with a warranty that covers the repair of manufacturing defects and is supported by the MCD manufacturer. A third...
Radio frequency identification (RFID) has long been regarded as an automated data collection technology that promises solutions to inefficiencies found in supply chains such as “just-in-case” inventory stock, inventory obsolescence, stockouts, and theft. However, the disappointingly slow return on RFID investment has forced companies to examine and redefine RFID initiatives....
The objective of this research project was to identify the limitations associated
with schedule-based Material Requirements Planning (SBMRP) and to
present a knowledge-based expert system (KBES) approach to solve these problems.
In SBMRP, the basic strategy is to use backward or forward scheduling
based on an arbitrary dispatching rule, such...
Facility location-allocation decisions and inventory stocking decisions are very important in spare parts logistics. Both sets of decisions affect total costs in the system and the service levels that can be achieved by establishing distances between customers and distribution centers (DCs) in facility location-allocation, and by determining the availability of...
Trials to achieve optimal bucking were made with updated OSU-BUCK software in an eastern and a western Oregon location during the summers of 1993 and 1994. The commercial version of the software allows tagging of each log with bar-code identification numbers and therefore provides tracking from stump to customer. Data...