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Inventory Management in Supply Chains

Presentations

10h00 AM-
10h25 AM
An Effect of Vendor Managed Inventory on Multiple-Retailers with Different Inventory Policy
?/TD> Richard Cho, University of New Brunswick, Faculty of Business, PO Box 5050, Saint John, NB, Canada, E2L 4L5, rcho@unbsj.ca

Recent development of VMI (Vendor Managed Inventory) system is known as an effective mechanism to reduce Bullwhip effect between suppliers and buyers. Dell Computer is a well-known example of VMI system to increase turn-over rate as well as a part availability. On the other hand, the implementation of VMI to South Korea resulted in a failure and suppliers of big retailers tried to retreat to the traditional system from VMI. Under the assumption of continuous review inventory policy, this paper analyzes the reasons why suppliers are unsatisfied with VMI implementation in Korea.


10h25 AM-
10h50 AM
The Influence of Quantity Discounts on Centralized Purchasing Decisions
?/TD> Jianli Hu, Chapman University, The George L. Argyros School of Business & Economics, One University Dr., Orange, CA, U. S. A., 92866, jhu@chapman.edu
Charles L. Munson, College of Business and Economics, Department of Management & Operations, PO Box 644744, Washington State University, Pullman, WA, U. S. A., 99163, munson@wsu.edu

Since the decision of whether or not to centralize the purchasing function directly affects which suppliers will be utilized, we present models which illustrate the important cost tradeoffs between centralized and decentralized purchasing systems in Chapter 5. Five scenarios have been explored: (1) complete decentralization, (2) centralized pricing with decentralized purchasing, (3) centralized purchasing with local distribution, (4) centralized purchasing and warehousing with batch distribution, and (5) centralized purchasing and warehousing with JIT distribution.


10h50 AM-
11h15 AM
Consignment Inventory: Implications for Vendors
  Mehmet Gumus, University of Waterloo, Department of Management Sciences, Waterloo, Ontario, Canada, N2L 3G1, mgumus@engmail.uwaterloo.ca
Elizabeth M. Jewkes, University of Waterloo, Department of Management Sciences, Waterloo, Ontario, Canada, N2L 3G1, emjewkes@engmail.uwaterloo.ca
James H. Bookbinder, University of Waterloo, Department of Management Sciences, Waterloo, Ontario, Canada, N2L 3G1, jbookbinder@engmail.uwaterloo.ca

Consignment inventory (CI) is a supply-chain sourcing practice between a customer and a vendor, whereby goods stored at the customer's premises are owned by the vendor until they are used by the customer. (Note that CI need not be synonymous with Vendor Managed Inventory.) Because the consignment customer has authority over the timing and quantity of replenishments, but pays only upon use, this practice seems to unbalance the supply-chain members' total costs. In our presentation, we analyze CI under deterministic demand to obtain conditions under which the vendor can accept it.


11h15 AM-
11h40 AM
Hedging Against Demand Uncertainty: A Review of the Role of Inventory Transshipments
  Mohamed I. Mahaboob, McMaster University, DeGroote School of Business, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4M4, mahabom@mcmaster.ca
Elkafi Hassini, McMaster University, DeGroote School of Business, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4M4, hassini@mcmaster.ca

One of the most challenging problems that faces supply chains is that of managing demand uncertainty. In this paper we start by describing the common strategies that are used to match supply to demand and then focus on that of inventory transshipment. We present a detailed survey of the literature and suggest possible future research directions.