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Longman Dictionary of Contemporary English
duration
noun
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
average
▪ This practice will ensure that the average project duration will be minimized.
▪ The average total duration of treatment is about I year, after which the disease usually remains quiescent.
▪ She found that: The average duration of the quarrels was 23 seconds - surprisingly short.
▪ The average duration of each cycle seems, on the basis of geological evidence, to be very roughly around 500 Ma.
expected
▪ For this man, the expected duration at the 1978/79 benefit levels is 74 weeks.
▪ A 10% cut in benefits brings down his expected duration by only 0.1 weeks.
▪ The expected stability and duration of political institutions is an important value in itself, since they allow for long-term planning.
▪ I calculated their expected duration and noted this information on an index card, arranging my listings in alphabetical order.
▪ His expected duration of unemployment is 12.9 weeks as calculated at the average values of benefits, earnings and extra income.
▪ His expected unemployment duration of 17.9 weeks is trimmed to 17.7 weeks by a 10% cut in benefits.
long
▪ Disqualified drivers can now be required to resit tests of longer duration.
▪ Patients with muscle-contraction headaches often report chronic pain of long duration.
▪ Results Patients included in the present study had diarrhoea that in some cases was of long duration.
▪ They can be regarded as events of long duration, stripped of superfluous detail.
▪ These patients were characterised by an early onset and long duration of pernicious anaemia.
▪ At the opposite extreme of a pulse of extremely long duration, the Fourier spectrum only contains extremely low frequencies.
▪ The relationship is of long duration and is asymmetrical.
▪ There is precedence for this long duration between introduction of the drug and the development of hepatitis.
mean
▪ Hourly frequency and mean duration of reflux episodes in the upright and supine period were also calculated in each patient.
▪ Secondly, the mean duration of treatment before study termination was similar in both groups.
median
▪ Oesophagitis was treated with omeprazole 40 mg/day for a median duration of 12 weeks.
short
▪ Afternoons were chosen by two-thirds as being especially suitable for courses of short duration.
▪ Repercussions were also felt in Tabasco where General Ignacio Martinez led an uprising of short duration.
▪ The first is very short duration, maximum output attacks.
▪ The blindness, however, was of short duration.
▪ This risk was reduced by the relatively short duration of the study, and the outpatient facility in which it was performed.
▪ Thus, although youth unemployment is high, it tends to be of shorter duration than that among the older age groups.
▪ The circumstances of the Allied occupation and its short duration undermined the achievement of both goals.
▪ The combined adenoidectomy and ventilation tube groups had the shortest duration of glue ear.
total
▪ The total duration of maintenance drug treatment was comparable in the two groups.
▪ The average total duration of treatment is about I year, after which the disease usually remains quiescent.
■ VERB
increase
▪ The estimated hazard may increase with duration for some individuals and not for others in the sample, depending on their data.
▪ Whatever the exercise, start gradually and increase the duration progressively in order to build up your endurance and fitness.
limit
▪ Anderson's proposal is for the tax subsidy to be limited to a five-year duration.
▪ The order, or any provisions it contains, may be limited in duration.
measure
▪ It would be more realistic to measure the duration of the tantrums.
▪ Some people prefer to measure the duration of tantrums.
reduce
▪ Adenoidectomy will considerably reduce the overall duration of glue ear.
▪ The results were promising, showing that in 100 people the lozenges appeared to reduce cold symptoms and duration by 42 percent.
▪ Their aim was then to reduce both frequency and duration.
▪ First, earlier and accelerated treatment to reduce duration of ischaemia.
▪ Short term supplementation with vitamin C reduces the cell proliferation to normal values possibly by reducing the S-phase duration.
▪ Finally, tertiary prevention aims to reduce the duration and severity of the disease which is established.
EXAMPLES FROM OTHER ENTRIES
▪ After a long voyage of two years' duration, he arrived in Canton in 1669.
▪ He refused to comment on his salary or the duration of his contract.
▪ It was decided that we would stay with my cousins for the duration of the war.
▪ The doctor will ask you about the duration and frequency of your headaches.
▪ These workshops, usually of one or two days' duration, bring teachers and industrial managers together.
▪ To avoid injuries, increase the duration of your exercise gradually.
▪ Zoe's temper tantrums had increased both in volume and duration.
EXAMPLES FROM CORPUS
▪ According to the event, the duration of this state may last from just a few months to many years.
▪ For example although duration is commonly measured for tantrums, this does not exclude the possibility of measures of frequency.
▪ I stayed there for the duration to try and prove to myself that I was able to do it.
▪ Speed is of no consequence, but duration is vital, the very nub of the matter.
▪ Such meetings can last all day and night, or for the duration of the trip.
▪ The duration of the semiconductor design right depends on if and when the topography is commercially exploited.
▪ These patients were characterised by an early onset and long duration of pernicious anaemia.
The Collaborative International Dictionary
Duration

Duration \Du*ra"tion\, n. [OF. duration. See Dure.] The state or quality of lasting; continuance in time; the portion of time during which anything exists.

It was proposed that the duration of Parliament should be limited.
--Macaulay.

Soon shall have passed our own human duration.
--D. Webster.

Douglas Harper's Etymology Dictionary
duration

late 14c., from Old French duration, from Medieval Latin durationem (nominative duratio), noun of action from past participle stem of Latin durare "harden" (see endure). Old legalese phrase for the duration popularized 1916 in reference to British enlistments in World War I.

Wiktionary
duration

n. 1 An amount of time or a particular time interval. 2 (context in the singular, not followed by "of" English) The time taken for the current situation to end, especially the current war 3 (context finance English) A measure of the sensitivity of the price of a financial asset to changes in interest rates, computed for a simple bond as a weighted average of the maturities of the interest and principal payments associated with it.

WordNet
duration
  1. n. the period of time during which something continues [syn: continuance]

  2. the property of enduring or continuing in time [syn: continuance]

  3. continuance in time; "the ceremony was of short duration"; "he complained about the length of time required" [syn: length]

Wikipedia
Duration (music)

In music duration is an amount of time or a particular time interval: how long or short a note, phrase, section, or composition lasts. A note may last less than a second, while a symphony may last more than an hour. One of the fundamental features of rhythm, or encompassing rhythm, duration is also central to meter and musical form.

The concept of duration can be further broken down into those of beat and meter, where beat is seen as (usually, but certainly not always) a 'constant', and rhythm being longer, shorter or the same length as the beat. Pitch may even be considered a part of duration. In serial music the beginning of a note may be considered, or its duration may be (for example, is a 6 the note which begins at the sixth beat, or which lasts six beats?).

Durations, and their beginnings and endings, may be described as long, short, or taking a specific amount of time. Often duration is described according to terms borrowed from descriptions of pitch. As such, the duration complement is the amount of different durations used, the duration scale is an ordering ( scale) of those durations from shortest to longest, the duration range is the difference in length between the shortest and longest, and the duration hierarchy is an ordering of those durations based on frequency of use.

Durational patterns are the foreground details projected against a background metric structure, which includes meter, tempo, and all rhythmic aspects which produce temporal regularity or structure. Duration patterns may be divided into rhythmic units and rhythmic gestures (Winold, 1975, chap. 3). However, they may also be described using terms borrowed from the metrical feet of poetry: iamb (weak-strong), anapest (weak-weak-strong), trochee (strong-weak), dactyl (strong-weak-weak), and amphibrach (weak-strong-weak), which may overlap to explain ambiguity.

Duration (project management)

Duration of a project's terminal element is the number of calendar periods it takes from the time the execution of element starts to the moment it is completed.

Duration should not be confused with work. E.g. it takes three days for a snail-mail letter to arrive at point B from point A, whereas the work put into mailing it may be 0.5 hours.

Strictly speaking, the phrase Duration of terminal element X is 5 days is incomplete. It fails to specify the following:

  • the probability with which the completion is expected in the time allotted (since any estimate is only a prediction about the uncertain future, see critical chain)
  • the resources to be used (sometimes using more resources or different resources speeds things up)
  • the assumptions which were made
  • the author of the estimation
  • the date the estimate was made
  • the work schedule of the resources
  • etc.

So the improved statement could read:

I, Marek Kowalczyk, as of 27 March 2005 strongly believe that if I fully applied myself to competing terminal element X and worked 8 hours a day every day, including holidays, and had all the materials at hand, then I would have completed it in 5 calendar days.' See metamodeling.

It may seem unwieldy to use such complicated statements, but lack of detail often leads to misunderstanding.

Duration

Duration may refer to:

  • The amount of elapsed time between two events
  • Duration (music) – an amount of time or a particular time interval, often cited as one of the fundamental aspects of music
  • Duration (philosophy) – a theory of time and consciousness first proposed by Henri Bergson
  • Duration (project management) – the number of calendar periods for the completion of a project in project management
  • Bond duration – the average time until all the cash flows from a bond are delivered.
Duration (philosophy)

Duration (French: la durée) is a theory of time and consciousness posited by the French philosopher Henri Bergson. Bergson sought to improve upon inadequacies he perceived in the philosophy of Herbert Spencer, due, he believed, to Spencer's lack of comprehension of mechanics, which led Bergson to the conclusion that time eluded mathematics and science. Bergson became aware that the moment one attempted to measure a moment, it would be gone: one measures an immobile, complete line, whereas time is mobile and incomplete. For the individual, time may speed up or slow down, whereas, for science, it would remain the same. Hence Bergson decided to explore the inner life of man, which is a kind of duration, neither a unity nor a quantitative multiplicity. Duration is ineffable and can only be shown indirectly through images that can never reveal a complete picture. It can only be grasped through a simple intuition of the imagination.

Bergson first introduced his notion of duration in his essay Time and Free Will: An Essay on the Immediate Data of Consciousness. It is used as a defense of free will in a response to Immanuel Kant, who believed free will was only possible outside of time and space.

Usage examples of "duration".

The duration of the siege has done nothing to abate the groundswell of support for Abies in and around this tiny Northwestern hamlet.

It was a compound of actinium, a substance far more radioactive than radium, but of lesser duration.

I went down and saw that their fines were paid, and pledged to the stationer adjudicator that they would be confined to quarters for the duration of our stay.

With the two simple elements of darkness and fire, we create a sensation of pain, which may be aggravated to an infinite degree by the idea of endless duration.

I have this regrettable circumstance to thank for those which befell me at the end of the duration, when the argosy eventually came to dock in Sarribad.

Mining quit, too, and the Aureole Mine was purposely buried for the duration of the war.

He also loosened the rules governing authorization for investigations and their duration.

No matter, the Poet said, a White Hun who falls asleep for the duration of a Benedicite or who starts flapping his arms is already a dead Hun.

The signals coming in from the biochip showed no clear pattern in terms of intensity or duration.

In this case the part may be cogredient with another duration which is part of the given duration, though it is not cogredient with the given duration itself.

For example, the tunnel of a tube railway is an event at rest in a certain time-system, that is to say, it is cogredient with a certain duration.

The stream of events which form the continuous series of situations of the electron is entirely self-determined, both as regards having the intrinsic character of being the series of situations of that electron and as regards the time-systems with which its various members are cogredient, and the flux of their positions in their corresponding durations.

To sum up, a duration and a percipient event are essentially involved in the general character of each observation of nature, and the percipient event is cogredient with the duration.

There is not only a significance of the discerned events embracing the whole present duration, but there is a significance of a cogredient event involving its extension through a whole time-system backwards and forwards.

Camilla what belonged to pleasantry in this business was of short duration, When the cotillon was over, she saw nothing of Edgar.