Nowadays, companies are obligated to restructure their business, in order for them to grow in the long-run, under radically changing environments. This paper focuses on the problem of entry into a new business, and tries to build a decision model to assist managers under such circumstances.
The model is presented as a computerized information system or decision support system (DSS).
The model is composed of four sub-decision models which are respectively concerned with the following aspects;
(1) judging whether or not the qualitative requirements for entering a new business are satisfied,
(2) capital budgeting by use of both accounting return on investment and payback period method,
(3) fund procurement decision, and
(4) company wide financial evaluation.
When data of respective environmental and policy variables are introduced, and the sub-models are solved sequentially, solution to the problem of entry into a new business segment is obtained.
The computer program of this DSS consists of seven sub-systems. Managers who watch the menu on the display can receive a rational support for their decision if they select a specific number of sub-systems and run them sequentially. Also, in order to obtain “system-flexibility” under variable circumstances, the “decision table” is used for judgment of qualitative factors and fund procurement decisions. It is easy to renew, partially add and/or delete parts of the decision table depending on the compan's unique conditions. This decision table is a kind of “knowledge-base” of the expert system.
Finally, to verify the usefulness of this DSS, three different cases are tested.
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