Efficiency: Facts, Discussion Forum, and Encyclopedia Article

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Efficiency

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	Efficiency may refer to: In science and technology Efficiency (statistics) Efficiency (statistics) In statistics, efficiency is a term used in the comparison of various statistical procedures and, in particular, it refers to a measure of the desirability of an estimator or of an experimental design.... , a measure of desirability of an estimator Algorithmic efficiency Algorithmic efficiency In computer science, efficiency is used to describe properties of an algorithm relating to how much of various types of resources it consumes. The two most frequently encountered are... , optimizing the speed and memory requirements of a computer program Efficiency factor Efficiency factor Efficiency factor: In data information transfer, the ratio of the time to transmit a text automatically at a specified modulation rate to the time actually required to receive the same text at a specified maximum error rate.... , in data communications In economics Economic efficiency, a general term, capturing the amount of waste or other undesirable features Pareto efficiency Pareto efficiency Pareto efficiency, or Pareto optimality, is an important concept in economics with broad applications in game theory, engineering and the social sciences.... , making one individual better off, without making any other individual worse off Kaldor-Hicks efficiency Kaldor-Hicks efficiency Kaldor-Hicks efficiency is a measure of economic efficiency that captures some of the intuitive appeal of Pareto efficiency, but has less stringent criteria and is hence applicable to more circumstances.... , like a less stringent Pareto efficiency Allocative efficiency Allocative efficiency Allocative efficiency is a situation in which the limited Resource of a firm are allocated in accordance with the wishes of consumers. An allocatively efficient economy produces an "optimal mix" of commodities.... , an optimal distribution of goods Efficiency wages Efficiency wages In labor economics, the efficiency wage hypothesis argues that wages, at least in some markets, are determined by more than simply supply and demand.... , paying workers more than the market rate for increased productivity Business efficiency, expenses as a percentage of revenue, etc. In physics Efficient energy use Efficient energy use Efficient energy use, sometimes simply called energy efficiency, is using less energy to provide the same level of energy service. An example would be building insulation to use less heating and cooling energy to achieve the same temperature.... , useful work per quantity of energy Energy conversion efficiency Energy conversion efficiency File:Efficiency diagram by Zureks.svgEnergy conversion efficiency is the ratio between the useful output of an energy conversion machine and the input, in energy terms.... , desired energy output per energy input Energy conservation Energy conservation Energy conservation is the practice of decreasing the quantity of energy used. It may be achieved through efficient energy use, in which case energy use is decreased while achieving a similar outcome, or by reduced consumption of energy services.... , reducing the use of energy Electrical efficiency Electrical efficiency The efficiency of an entity in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed , typically denoted by the Greek letter small Eta .... , useful power output per electrical power consumed Fuel efficiency Fuel efficiency Fuel efficiency, in its basic sense, is the same as thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or Mechanical work.... , converting energy in fuel to kinetic energy or work Specific impulse Specific impulse Specific impulse is a way to describe the efficiency of rocket engine and jet engine engines. It represents the impulse per unit of propellant.... , in propulsion systems, a measure of fuel efficiency Lighting efficiency, visible light from a light source per unit of energy, in lumens per watt Mechanical efficiency Mechanical efficiency In physics, mechanical efficiency is the effectiveness of a machine and is defined asMechanical Efficiency is the ratio of work input to work output.... , the effectiveness of a simple machine, mechanical advantage over ideal mechanical advantage In thermodynamics: Exergy efficiency Exergy efficiency Exergy efficiency computes the efficiency of a process taking the second law of thermodynamics into account.... , measure of second law thermodynamic loss Thermal efficiency Thermal efficiency In thermodynamics, the thermal efficiency is a Dimensionless quantity performance measure of a thermal device such as an internal combustion engine, a boiler, or a furnace, for example.... , useful work per the higher heating value of the fuel Radiation efficiency, ratio of radiated power to power absorbed at the terminals of an antenna Volumetric efficiency Volumetric efficiency Volumetric efficiency in internal combustion engine design refers to the efficiency with which the engine can move the charge into and out of the Cylinder .... , in internal combustion engine design Lift-to-drag ratio Lift-to-drag ratio In aerodynamics, the lift-to-drag ratio, or L/D ratio , is the amount of Lift generated by a wing or vehicle, divided by the drag it creates by moving through the air.... Faraday Efficiency Faraday efficiency Faradic Efficiency describes the efficacy with which Electric charge are transferred in a system facilitating an electrochemical reaction. The word "faraday" in this term has two interrelated aspects.... , electrolysis Quantum efficiency Quantum efficiency Quantum efficiency is a quantity defined for a photosensitive device such as photographic film or a charge-coupled device as the percentage of photons hitting the photoreactive surface that will produce an electron?hole pair.... , a measure of sensitivity of a photosensitive device Grating efficiency, a generalization of the reflectance of a mirror, extended to a diffraction grating Other uses Efficiency Movement Efficiency Movement The Efficiency Movement was a major dimension of the Progressive Era in the United States. It flourished 1890-1932. Adherents argued that all aspects of the economy, society and government were riddled with waste and inefficiency.... , of the Progressive Era (1890–1932), advocated efficiency in the economy, society and government Material efficiency Material efficiency Material efficiency is a description or Metrics which expresses the degree to which a construction project or physical process is carried out in a manner which consumes, incorporates, or wastes more or less of a given material compared to some standard.... , compares material requirements between construction projects or physical processes Efficient (horse) Efficient (horse) Efficient is an Australian grey thoroughbred gelding racehorse, bred in New Zealand, who won the 2007 Melbourne Cup, ridden by Michael Rodd, and the 2006 Victoria Derby.... , winner of the 2007 Melbourne Cup Studio apartment Studio apartment A studio apartment, also known as a studio flat , efficiency apartment or bachelor/bachelorette style apartment, is a self-contained, small apartment, which combines living room, bedroom and kitchenette into a single unit, barring a bathroom.... , a one-room apartment, also called an efficiency apartment Textual efficiency, the content density of a message See also Inefficiency Inefficiency The Term inefficiency has several meanings depending on the context in which its used:*Algorithmic efficiency - refers to less than optimum computer programs that might exhibit one of more of the symptoms of:-...