Would you please check this sentence regarding structure?
As nonlinear multi level programming problems are much more difficult to solve, the proposed model was converted to two nonlinear problems.
NOT A TEACHER
I do not see anything wrong with it as far as the structure is concerned. Just one thing, I would use "multi-level" instead of "multi level". It might be correct your way, but "multi-level" is a safe bet.
Last edited by CarloSsS; 02-Jun-2012 at 18:26.
Please note that I'm not a teacher.