Dear smouksass1,
Thanks for your reply.
What I'd like to implement is very similar to what you described. Most of my model parameters are connected by algebraic equations, so many of them have boundaries which depend on non linear combinations of other parameter values.
See below a simplified example:
I want to estimate Base1_0, Base2_0, Base3_0, kcirc1, kcirc2 and kprol, such that
kprol < (Base1_0*kcirc1 + Base2_0*kcirc2)/Base3_0
or, similarly
kprol = (Base1_0*kcirc1 + Base2_0*kcirc2)/Base3_0 - Deltakprol
where Deltakprol has to be smaller than (Base1_0*kcirc1 + Base2_0*kcirc2)/Base3_0
Many thanks in advance,
Chiara