In chapter 3.3 the 13 weighting categories are described, which can be used for the valuation of the material flows. Their appropriate influence can be changed in the graphic presentation, which can be called up via EDIT CALCULATE or via COMPARE, via MISCELLANEOUS DISPLAY WEIGHTING OF THE WEIGHTINGS.
The weighting of the input is made in equal shares via the category CLAIMING OF RESOURCES and RISK, and that of the waste via HUMAN TOXICITY (ACUTE), CHRONIC TOXICITY, ECOTOXICOLOGY, and OZONE CREATION.
On the one hand, the price is the impact category for the claiming of the resources, on the other, it is useful for the specification of the economic index (cost index, CI), which can be called up under COLUMNS.
Figure
34
Weighting of the weighting
Among the weighting categories those can be ticked off, which should contribute to the formation of the weighting factor. In the input fields, you can change the influence rate of the selected weighting categories specified as ‘k’ in the term Qtotal; the appropriate percental amount is represented on the right. In the example of Figure 34, for the determination of the output categories shares of appropriately 25 % are represented, i. e., k1 = k2 = k3 = k4 = 0.25.
Impact categories of substances showing non-problematic values are weighted with a weighting factor Q = 1 so that the dimension of the mass always maintains. But in the case that all substances, which do not contribute anything to the categories selected, shall to be blinded out, the weighting factor Q = 0 can be assigned to by clicking ALLOW Q = 0. Clicking UPDATE or CLOSE, the changes have effects on the bar chart presented.
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