objectiveobjective functionobjective testoff line qcoff the shelfoil hardeningon demandon line qcon line statistical process controlon orderon the job trainingonion factoronlineontologyopen systemoperating characteristicoperating characteristic curveoperationoperation process chartoperation researchopportunityopportunity lossoptimisticoptimized production technologyorderorder expeditingorder managementordering costorganizationorganization breakdown structureorganization chartorganization structureorganizational breakdown structureout of controloutcomeoutsourcingoutwardoveral goaloverall equipment effectivenessoverhaul maintenanceoverheadoverrunovertime