ownership information in the decision-making process. This
fieldwork allowed us to learn more about the theoretical
framework itself and the requirements for successful
This
七路数字抢答器电路图+原理设计implementation. enabled us to advance our theory
one step further and develop a generic methodology to
construct a decision model for strategic procurement that
does not focus on a specific product group but is applicable
to a wide range of different product groups. The result is a
matrix representation of all total cost of ownership elements
and a flexible mixed integer programming formulation that
allows us to take a variety of cost elements, discounts and
strategic constraints into account. To clarify the approach,
we will discuss the implementation of a company-wide
decision model for purchasing at Usinor. We start by
describing the construction of the total cost of ownership
matrix for Usinor and discuss the resulting mathematical
programming formulation. Furthermore, we will comment
on the general results obtained. Numerical data in this
section will be limited due to confidentiality reasons. Finally,
we will discuss opportunities for further research.
Building the total cost of ownership matrix
In the first workshop, we explained the principles of our
approach to the different purchasing managers of the
company. Then, we conducted interviews with these
managers in order to discuss the relevance of total cost of
ownership elements and constraints to their product groups.
On the basis of these interviews, we developed the first list of
cost elements and constraints which was discussed during a
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