Effectively Selecting Suppliers Using Total Cost of Ownership
提出一个基于总拥有成本的动态数学规划模型，帮助采购经理在约束条件下最小化总成本，客观评估供应商选择策略。在Cockerill Sambre公司的两个产品组中实施，相比现行做法可节省超过10%的成本。
SUMMARY In today's business world characterized by intense global competition, cost management is an important strategic weapon. External purchases of products and services generally account for more than 50 percent of total costs. Significant cost savings can be realized by effectively selecting suppliers and determining optimal order quantities. Existing cost management tools focus on rationalizing production and distribution activities and do not consider the purchasing function. In practice, simple, subjective, and incomplete approaches for supplier selection are often used. This article presents a rigorous decision support system using total cost of ownership information. The system uses a dynamic mathematical programming model that derives a purchasing strategy by minimizing the total costs, taking into account the relevant constraints. It allows the purchasing and supply manager to objectively evaluate alternative policies. A recent implementation of the system for two product groups at Cockerill Sambre shows potential savings of more than 10 percent compared to current practices.