1 Largest natural gas producers worldwide based on production output in Q2 2016 (in billion cubic feet per day)*Global natural gas largest producing companies 2016. 2  2017 ranking of the leading global oil and gas companies based on revenue (in billion U.S. dollars)2017 global list of the top oil and gas companies based on revenue.
Operational Definition â A definition in terms of the operations used to produce and measure a phenomenon. It is important to define a behavior in clear and concise terms so that it can be accurately measured, assessed and treated by a number of individuals across a variety of environments.perational Definition â A definition in terms of the operations used to produce and measure a phenomenon. It is important to define a behavior in clear and concise terms so that it can be accurately measured, assessed and treated by a number of individuals across a variety of environments.
Operational Definitions: 1  thorough descriptions of a specific behavior: describe the behavior-what it looks like and the conditions under which it both occurs an d does not occur. 2  must answer the basic wh-questions, as well as to provide examples and non-examples of the behavior. A thorough and specific description of an individual behavior. 2  Used to define both target (e.g., tantrums, elopement) or replacement behavior (e.g., gestures, engagement). 3  Used to promote clear communication across parents and professionals.