decrement


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decrement

[′dek·rə·mənt]
(computer science)
A specific part of an instruction word in some binary computers, thus a set of digits.
For a counter, to subtract 1 or some other number from the current value.
(hydrology)
(mathematics)
The quantity by which a variable is decreased.
(physics)
The ratio of the amplitudes of an underdamped harmonic motion during two successive oscillations. Also known as damping factor; numerical decrement.

Decrement

 

the weakening of an excitation according to the extent of its distribution along a nerve or muscle fiber.

In normal nerve and skeletal-muscle (striated) fibers of vertebrate animals, an excitation or, specifically, its electrical component—the activity potential—conforms to the so-called all-or-none rule—that is, it arises only after the stimulus attains threshold intensity; once it arises, it is distributed further without decrement. In certain tissues (for example, in many arthropod muscles) excitation is distributed with decrement even under normal conditions. According to the membrane theory of excitation, nondecremental conduction of excitation is converted to decremental conduction in all cases when there is a decrease in regenerative depolarization, which is basic for the formation of the activity potential. This takes place, for example, when a nerve or muscle is under the influence of anesthetics or narcotics and when there is cessation of blood circulation.

REFERENCE

Katz, B. Nerv, myshtsa i sinaps. Moscow, 1968. (Translated from English.)

B. I. KHODOROV

decrement

To subtract a number from another number. Decrementing a counter means to subtract 1 or some other number from its current value.
References in periodicals archive ?
The Modified flagged binary adder uses a simple technique for inverting a selected sum bits to find the resultant sum bits with its increment and decrement results such as (A+B+1) , (A+B-1), (A+B) and (A-B).
Instrumental determination of stiffness, frequency, and decrement from each tissue site were downloaded from the Myoton-3 and imported to SPSS (version 21, IBM Corporation; Armonk, New York) for further analysis.
The determined amplitude-frequency characteristics of the specimens were used to determine their logarithmic decrement of oscillations and the corresponding dependence on the amplitude of maximum stresses max during the variation of the frequency of oscillations and test temperature for different values of the parameters of the coatings.
When introducing surrender rates as a second type of decrement in the portfolio, the curve showing number of deaths changes, as laid out in Part (b) of Figure 1.
The vibration damping was assessed by determining the logarithmic decrement according to relationship of calculation (1).
As a result, decrements that otherwise might occur with separate pools can be avoided.
Food hygiene laws are being flouted to preserve profits, to the decrement of the public, by some callous people.
HEALTHY adults, between 65 and 85, are invited to visit Glasgow Caledonian University to participate in an enjoyable research project investigating the age-related decrement in visual memory.