3. Characterize functions
Each function and constraint must be dimensioned by :
criteria: characteristics or dimensions of the action verb and the elements cited ;
acceptance levels for each criterion ;
a level of flexibility for each dimensioning, depending on whether the acceptance level is required (F0), conditionally modifiable (F1) or flexible (F2);
and/or an exchange rate, where the expected level of performance depends on the resources to be devoted to it.
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Characterize functions
Weighting functions
Bibliography
Expressing needs (applications of the functional approach) , AFAV, Édition AFNOR Gestion, 1989/1998
Desmesnards P. H., Réussir l'analyse des besoins , Eyrolles – Éditions d'Organisation, 2007
ToolWebsite
www.afav.eu AFAV association website – Value and management, for the development of Value methods
AFNOR standards
NF EN 1325: value analysis vocabulary
NF X50-100: functional analysis – fundamental characteristics
FD X50-101: general tools
NF X50-151: functional expression of need and CDCF
Acronym
CDCF: functional specifications
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