ICSF, or Integrated
C4I System Framework. Defines capability gaps in terms of functional area(s), relevant range of military ops, time, obstacles to overcome, and key attributes, with appropriate measures of effectiveness. Recommends materiel approach(es) based on cost analysis, efficacy, sustainability, environmental quality impacts, and associated risks.
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A structural model is invariant under a constant scale factor (ICSF) if model fit is not changed if all variables are multiplied by the same constant. Most, but not all, structural models that are of practical interest are ICSF (see
Structural Equation Modeling ).