SEARCH Articles Figures Tables Acceptable Operator Exposure Level defined Antithesis Orbital Functional Derivatives Define Linear Operators Commercial operator, defined Defined operational boundary Hamiltonian operator defined Information systems defining operations Moment operators defined Operational interruption, defined Operational risk management defined Operationally defined fractions Operationally defined fractions classification Operationally defined speciation Operators defined Organic matter operationally defined fractions Process simulation user-defined unit operations Reduced density operator defined Regulatory agencies operators defined User-defined unit operations