2. Complete E-P-V (Element-Parameter-Values) trees for all parameters
Using the grid suggested in figure 2, place all the parameters in their proper place in the EPV tree. When you move a parameter from its list to the EPV tree, this means that the cause-effect assertion is validated in both directions (satisfactory and unsatisfactory). Make sure that each parameter is taken into account in at least one polycontradiction (that it is not an orphan).
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Complete E-P-V (Element-Parameter-Values) trees for all parameters
Evaluate the degree of importance of the parameters and their links with the laws of evolution
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G. Altshuller, Creativity as an Exact Science: The theory of the solution of inventive problems , Gordon and Breach Science Publishers, 1984
D. Choulier, TRIZ: a state of mind , TRIZ France, 2000
D. Cavallucci, Contribution à la conception de nouveaux systèmes mécaniques par intégration méthodologique , Louis Pasteur, 1999
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