average cost per unit
41revenue unit — The average amount of revenue per fiscal year from postal rates and also fees for 1,000 pieces of originating mail and special service transactions. The number of revenue units is used to categorize post offices by size. (Also see cost… …
42production, theory of — ▪ economics Introduction in economics, an effort to explain the principles by which a business firm decides how much of each commodity that it sells (its “outputs” or “products”) it will produce, and how much of each kind of labour, raw… …
43productivity — pro·duc·tiv·i·ty (prō dŭk tĭvʹĭ tē, prŏd ək ) n. 1. The quality of being productive. 2. Economics. The rate at which goods or services are produced especially output per unit of labor. 3. Ecology. The rate at which radiant energy is used by… …
44New Zealand Emissions Trading Scheme — See also: Climate change in New Zealand The New Zealand Emissions Trading Scheme (NZ ETS) is a national all sectors all greenhouse gases all free allocation uncapped emissions trading scheme. The NZ ETS was first legislated in September 2008 by… …
45insurance — /in shoor euhns, sherr /, n. 1. the act, system, or business of insuring property, life, one s person, etc., against loss or harm arising in specified contingencies, as fire, accident, death, disablement, or the like, in consideration of a… …
46Intermittent power source — [ Erie Shores Wind Farm monthly output over a two year period] An intermittent power source is a source of electric power generation that may be uncontrollably variable or more intermittent than conventional power sources, and therefore non… …
47Marginal product of labor — In economics, the marginal product of labor also known as MPL or MPN is the change in output from hiring one additional unit of labor. It is the increase in output added by the last unit of labor.[1] Ceteris paribus that no other inputs to… …
48Tendency of the rate of profit to fall — The tendency of the rate of profit to fall (TRPF) is a hypothesis in economics and political economy, most famously expounded by Karl Marx in chapter 13 of Das Kapital Vol. 3. It was generally accepted in the 19th century. Economists as diverse… …
49motion picture, history of the — Introduction history of the medium from the 19th century to the present. Early years, 1830–1910 Origins The illusion of motion pictures is based on the optical phenomena known as persistence of vision and the phi phenomenon. The first …
50Coefficient of performance — The coefficient of performance or COP (sometimes CP), of a heat pump is the ratio of the change in heat at the output (the heat reservoir of interest) to the supplied work. Contents 1 Equation 2 Derivation 3 Improving COP 4 …
