I am using a concept that was developed for one subject area and applying it to a different area. However, there is a one-to-one correspondence between the objects in the original concept and the objects in the area I would like to apply it to.
Specifically, I am drawing an analogy between voters in a shareholder meeting (where not everyone has the same voting power) and chemicals at a Superfund site, in that both carry a certain weight (votes/health risk) towards a measure (bill/remedial action decision).
I would like to introduce this discussion with a section header that quickly describes that I will be providing a rationale for applicability of the specific concept. Right now, I am using the provisional title Rationale for Applicability, but perhaps there is something "preposition-free" or more descriptive?