Luɔɔi käk Engineering aye wuɔ̈c käk kaam "mathematical models" ku "physical models" looi; kën rɛɛc bï löŋ ye cɔla physical model alë bï ke cuɔtpiny ke yïn loi mathematical model tueŋ ke yïn luui käke kompiöta ye cɔla computer software package, cït mɛn kën thuɔ̈ɔ̈r ye kuɔɔny kompiöta.