Sustainable Rail Transport by Marin Marinov & Janene Piip

Author:Marin Marinov & Janene Piip
Language: eng
Format: epub
ISBN: 9783030195199
Publisher: Springer International Publishing

Objective

Values

Deviations

Weights

Target

Reached

Difference

ni (%)

pi (%)

ui

vi

O

1800.000

1893.000

93.000

0.0

5.2

0

2

NPV

17.901

18.548

0.647

0.0

3.6

10

0

DF

4.764

5.105

0.340

0.0

7.1

4

0

AC

0.212

0.237

0.025

0.0

11.7

8

0

U

35.133

35.000

−0.133

0.4

0.0

6

0

Total

0.4

27.6

where O = Budget, NPV = Net Present Value, DF = Physical Availability, AC = Accident Rate Decrease, and U Attendance to stakeholders

Even with a significant reduction of negative deviations in third scenario, how much more budget would be needed for all negative deviations to be equal to zero? This would mean that all target values of the objectives were achieved or were larger than that established by the decision maker. To evaluate this trade-off, a new scenario was carried out, with the weights of the deviation variables maintained in relation to the previous situation, except for the positive deviation variable of the budget, which went from 2 to zero, showing that this deviation ceased to be a priority and became indifferent to the decider. The results of this scenario will consider no budget restriction and will show how much more budget would be necessary, so the decision maker could reach at least the target level of all the other objectives. In these conditions of the fourth scenario, the model selected 13 projects, with an overflow of R$283 million in the budget target, and an objective function equal to 0.0% and no negative deviation, as shown in Table 8.Table 8Fourth scenario results

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