Managing the Bullwhip Effect in Multi-Echelon Supply Chains

Managing bullwhip induced risks in supply chains

Quantifying the bullwhip effect in supply chains

Consider multiple companies operating as a serial supply chain. Within this environment, end users form the demand for the last company in the supply chain, but the demand for upstream companies is formed by the companies in the immediate downstream supply chain link. It has been shown that demand seasonality and forecast error can increase as we proceed up the supply chain. These demand distor...

Inventory Resonances in Multi-echelon Supply Chains

We consider multi-echelon supply chains, typically consisting of retailer, distributor, manufacturer, etc. The inventory of each actor is subject to its own delay in delivery time, and each chooses its own inventory replenishment strategy. We model this interaction with a system of linear differential delay equations. When put in matrix form the system is triangular and we derive an exact solut...

Supply and Demand Uncertainty in Multi-Echelon Supply Chains

This paper explores the differences between demand and supply uncertainty in multi-echelon supply chains. Our central premise is that the insights gained from the study of one type of uncertainty often do not apply to the other. In fact, the two types of uncertainty are in a sense mirror images of each other, in that the optimal strategy for coping with supply uncertainty may be exactly opposit...

Mitigating the Bullwhip Effect in Supply Chains using Grammatical Evolution

Michael Phelan University College Dublin Centre for Telecommunications ValueChain-Driven Research, Room D102 (A), Building D, Michael Smurfit School of Business, University College Dublin, Carysfort Avenue, Blackrock, Co. Dublin, Ireland Tel: + 353 1 716 4355 [email protected] Seán McGarraghy University College Dublin Management Information Systems Quinn School of Business University Colleg...