For example, when referencing the model we presented in the paper,
The presented model is helpful to many other related researches.
or
The model presented is helpful to many other related researches.
If it is proposed, I think both is OK, and proposed model might be slightly better in academic writing? What about presented?
I also see sentences like
The model presented in this section gives a brief introduction on the use of the COMSOL ECRE Version.