Industrial Engineering and Management Systems

Korean Institute of Industrial Engineers (대한산업공학회)
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Safer Zone Analysis for Multiple Investment Alternatives on the Total-Cost Unit-Cost Domain

  • Kono, Hirokazu (Graduate School of Business Administration, Keio University)
  • Received : 2011.11.12
  • Accepted : 2012.02.23
  • Published : 2012.03.01
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Abstract

Along with the recent trend toward increasing variety and shorter life of products in the market, evaluation of risk for economic investment alternatives is of practical importance in manufacturing companies. This paper assumes that each alternative is composed of demand volume and unit sales price as income factors, and unit variable cost and fixed cost as expense factors. The paper assumes that these four factors move worse from the originally expected values, toward the direction of decreasing profit. Values of these four factors are also assumed to fluctuate from year to year over the entire multi-period. By applying the analysis of the breakeven points to each of the four factors, safer area against these changes is represented on the two dimensional domain called normalized total-cost unit-cost domain. A practical numerical example is analyzed to verify the validity of the proposed method.

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References

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