Crossword clues for efficiency
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
efficience \ef*fi"cience\ ([e^]f*f[i^]sh"ens), efficiency \ef*fi"cien*cy\ ([e^]f*f[i^]sh"en*s[y^]), n. [L. efficientia.]
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The quality of being efficient or producing an effect or effects; efficient power; effectual agency.
The manner of this divine efficiency being far above us.
--Hooker. -
(Mech.) The ratio of useful work to energy expended.
--Rankine.efficiency of a heat engine, the ratio of the work done by an engine, to the work due to the heat supplied to it.
efficiency apartment \efficiency apartment\ n., a small apartment[4], sometimes furnished, with minimal kitchen and bath facilities. The unit may comprise a single room plus a bathroom, and the kitchen facilities are often open to the main room, or may form a small niche in a corner. There are many variations of efficiency apartment, including some in which furnishings such as a bed may be pulled out from a wall recess and stored there again when not in use. Also called an efficiency.
Apartment \A*part"ment\, n. [F. appartement; cf. It. appartamento, fr. appartare to separate, set apart; all fr. L. ad + pars, partis, part. See Apart.]
A room in a building; a division in a house, separated from others by partitions.
--Fielding.A set or suite of rooms.
--De Quincey.A compartment. [Obs.]
--Pope.-
A room or suite of rooms in a building comprising a dwelling unit separate from others in the building, and typically having its own separate bath, sanitary, and kitchen facilities. Such apartments are in most cases rented from the owner by those dwelling in them.
efficiency apartment, a small apartment[4], sometimes furnished, with minimal kitchen and bath facilities. The unit may comprise a single room plus a bathroom, and the kitchen facilities are often open to the main room, or may form a small niche in a corner. There are many variations of efficiency apartment, including some in which furnishings such as a bed may be pull out from a wall recess and stored there again when not in use. Also called an efficiency.
Douglas Harper's Etymology Dictionary
1590s, "power to accomplish something," from Latin efficientia "efficient power; efficiency; influence" (from efficientem; see efficient) + -cy. In mechanics, "ratio of useful work done to energy expended," from 1858. Attested from 1952 as short for efficiency apartment (itself from 1920).
Wiktionary
n. The extent to which time is well used for the intended task.
WordNet
n. the ratio of the output to the input of any system
skillfulness in avoiding wasted time and effort; "she did the work with great efficiency" [ant: inefficiency]
Wikipedia
''' Efficiency ''' is the extent to which time or effort is well used for the intended task or purpose, or the ratio of power consumed to useful power output as in
- Electrical efficiency
- Energy conversion efficiency
- Mechanical efficiency
Efficiency may also refer to:
- Efficiency (apartment) or Studio apartment, a one-room apartment
- Efficiency (Network Science)
- Efficiency (statistics) of a statistical estimator
In the comparison of various statistical procedures, efficiency is a measure of the optimality of an estimator, of an experimental design, or of a hypothesis testing procedure. Essentially, a more efficient estimator, experiment, or test needs fewer observations than a less efficient one to achieve a given performance. This article primarily deals with efficiency of estimators.
The relative efficiency of two procedures is the ratio of their efficiencies, although often this concept is used where the comparison is made between a given procedure and a notional "best possible" procedure. The efficiencies and the relative efficiency of two procedures theoretically depend on the sample size available for the given procedure, but it is often possible to use the asymptotic relative efficiency (defined as the limit of the relative efficiencies as the sample size grows) as the principal comparison measure.
Efficiencies are often defined using the variance or mean square error as the measure of desirability.
In professional basketball, the most commonly used statistical benchmark for comparing the overall value of players is called efficiency. It is a composite basketball statistic that is derived from basic individual statistics: points, rebounds, assists, steals, blocks, turnovers and shot attempts. The efficiency stat, in theory, accounts for both a player's offensive contributions (points, assists) and their defensive contributions (steals, blocks), but it is generally thought that efficiency ratings favor offense-oriented players over those who specialize in defense, as defense is difficult to quantify with currently tabulated statistics.
In network science, the efficiency of a network is a measure of how efficiently it exchanges information. The concept of efficiency can be applied to both local and global scales in a network. On a global scale, efficiency quantifies the exchange of information across the whole network where information is concurrently exchanged. The local efficiency quantifies a network's resistance to failure on a small scale. That is the local efficiency of a node i characterizes how well information is exchanged by its neighbors when it is removed.
Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without waste. In more mathematical or scientific terms, it is a measure of the extent to which input is well used for an intended task or function (output). It often specifically comprises the capability of a specific application of effort to produce a specific outcome with a minimum amount or quantity of waste, expense, or unnecessary effort. Efficiency, of course, refers to very different inputs and outputs in different fields and industries.
Efficiency is very often confused with effectiveness. In general, efficiency is a measurable concept, quantitatively determined by the ratio of useful output to total input. Effectiveness is the simpler concept of being able to achieve a desired result, which can be expressed quantitatively but doesn't usually require more complicated mathematics than addition. Efficiency can often be expressed as a percentage of the result that could ideally be expected, for example if no energy were lost due to friction or other causes, in which case 100% of fuel or other input would be used to produce the desired result. This does not always apply, not even in all cases in which efficiency can be assigned a numerical value, e.g. not for specific impulse.
A common but confusing way of distinguishing between efficiency and effectiveness is the saying "Efficiency is doing things right, while effectiveness is doing the right things." This saying indirectly emphasizes that the selection of objectives of a production process is just as important as the quality of that process. This saying popular in business however obscures the more common sense of "effectiveness", which would/should produce the following mnemonic: "Efficiency is doing things right; effectiveness is getting things done." This makes it clear that effectiveness, for example large production numbers, can also be achieved through inefficient processes if, for example, workers are willing or used to working longer hours or with greater physical effort than in other companies or countries or if they can be forced to do so. Similarly, a company can achieve effectiveness, for example large production numbers, through inefficient processes if it can afford to use more energy per product, for example if energy prices or labor costs or both are lower than for its competitors.
For example, one may measure how directly two objects are communicating: downloading music directly from a computer to a mobile device is more efficient than using a mobile device's microphone to record music sounds that come from a computer's speakers.
Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output ("product") produced per the amount C ("cost") of resources consumed. This may correspond to a percentage if products and consumables are quantified in compatible units, and if consumables are transformed into products via a conservative process. For example, in the analysis of the energy conversion efficiency of heat engines in thermodynamics, the product P may be the amount of useful work output, while the consumable C is the amount of high-temperature heat input. Due to the conservation of energy, P can never be greater than C, and so the efficiency r is never greater than 100% (and in fact must be even less at finite temperatures).
Usage examples of "efficiency".
Pope Gregory the Great, in the sixth century, either borrowing some of the more objectionable features of the purgatory doctrine previously held by the heathen, or else devising the same things himself from a perception of the striking adaptedness of such notions to secure an enviable power to the Church, constructed, established, and gave working efficiency to the dogmatic scheme of purgatory ever since firmly defended by the papal adherents as an integral part of the Roman Catholic system.
There came to their great aeronautic parks at Chinsi-fu and Tsingyen by the mono-rails that now laced the whole surface of China a limitless supply of skilled and able workmen, workmen far above the average European in industrial efficiency.
Without the interfering strands hanging in her eyes she was better able to see to her task and her fingers moved with agile speed and efficiency even though the blood continued to ooze, though with much less frequency as the wound was stitched closed.
The Report has no scientific basis whatever and has been riddled with criticism by expert students of every kind, including not merely students of alcoholism but also Professor Alfred Marshall of Cambridge, the greatest English-speaking economist of the time, who has shown that there are no grounds for the assumptions made by Professor Pearson in that part of his argument which is based upon the economic efficiency of drinking and non-drinking parents.
Seregil and Alec warmed themselves gratefully at the cheerful blaze on the hearth while their host shuffled about with practiced efficiency, setting out bread, soup, and boiled eggs for them at the scrubbed wooden table.
Consequently the concentration of carbon dioxide in the alveolar air and the blood is increased and, the efficiency of the cerebral reducing valve being lowered, visionary experience becomes possible.
The consolidation of MME with Amalgamated has resulted in a number of organizational changes for efficiency, Mr.
While the Uryd disdained use of the bow, they excelled with spear and atlatl, with the toothed-disc and the black-rope, and Synyg had taught his son an impressive efficiency with these weapons as well.
I was posted here from Starjj, another biped world, sir, and there my reputation for efficiency was also high.
Second, modern experiments have shown that bipedalism does not increase energy efficiency, and as more fossils have been found we now recognise that early bipedal apes lived in environments where trees were plentiful.
And yet that it is precisely in virtue of bodiless powers that bodies possess their efficiency is clear from certain reflections: It will be admitted that quality and quantity are two different things, that body is always a thing of quantity but not always a thing of quality: matter is not qualified.
There was deadly efficiency in the way they piled out at 1280 Bolden Avenue, and covered the vicinity, although it proved to be much effort for nothing.
The Luftwaffe carried out its part in the German invasion of Poland with fierce efficiency and many Polish communities were bombed in the name of tactical bombing, the yardstick being that, if a town stood in the way of the Wehrmacht, it was bombed.
She passed a board that was covered with quantum equations, another, half-erased already, that held only two clean and concise Bussard drive efficiency calculations, the kind Li had wrestled with in her OCS math courses.
The investigations include the possibility of making satisfactory commercial fuels from lignite or low-grade coals which do not stand shipment well, the benefiting of culm or slack coals which are wasted or sold at unremunerative prices, and the possibility of improving the efficiency of good coals.