persistence

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persistence

[pər′sis·təns]
(electronics)
A measure of the length of time that the screen of a cathode-ray tube remains luminescent after excitation is removed; ranges from 1 for short persistence to 7 for long persistence.
A faint luminosity displayed by certain gases for some time after the passage of an electric discharge.
(meteorology)
With respect to the long-term nature of the wind at a given location, the ratio of the magnitude of the mean wind vector to the average speed of the wind without regard to direction. Also known as constancy; steadiness.

persistence

(programming)
A property of a programming language where created objects and variables continue to exist and retain their values between runs of the program.

persistence

(hardware)
The length of time a phosphor dot on the screen of a cathode ray tube will remain illuminated after it has been energised by the electron beam. Long-persistence phosphors reduce flicker, but generate ghost-like images that linger on screen for a fraction of a second.

persistence

(1) In a CRT, the time a phosphor dot remains illuminated after being energized. Long-persistence phosphors reduce flicker, but generate ghost-like images that linger on screen for a fraction of a second.

(2) In object technology, the storage of an object on a permanent storage device such as a disk or SSD. See persistent data and persistent name.
References in periodicals archive ?
The heritability and repeatability of persistency of lactation was measured to be low (0.
Unless it is a lapse-supported product, persistency generally benefits a company's profitability.
Keywords: persistency, milk yield, Spearman correlation, dairy cow, Random Regression Model.
Using the RRM that best fit the data, identified by the comparison criteria described above, genetic parameters were obtained for nine measures of persistency in milk yield (PSO (Table 2) and milk yield up to 305 DIM, as well as the genetic and permanent environmental correlations between these persistency measures and between these measures and 305MY.
renewal persistency and bank's remuneration structure to ensure protection of policyholders' interests as well as to provide sustainable growth to this sector.
In selection programs, many researchers emphasize the major importance of lactation persistency, which is defined as the cow's capacity to maintain milk production after peak point in a curve.
At the same time, this will extend the life insurer's hand to a hurting population in time of need while also reinvigorating sales momentum and solidifying persistency.
Product managers must continue to leverage their compliance and persistency opt-in reminder programs.
The majority of the participants' voluntary product persistency has been in line with their pricing assumptions.
To improve health and redress the negative energy balance in early lactation while maintaining total milk yield, it has been suggested that the lactation curve could be modified to reduce milk yield in early lactation and thus to give higher lactation persistency after the lactation peak (Dekkers et al.
With the 13-month persistency ratio ranging between 44-77% for private players, Canara HSBC Oriental Bank of Commerce Life Insurance Company achieved the highest 13-month persistency ratio amongst private players for April-June 2010 at 88%.

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