coefficient


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coefficient

 [ko″ĕ-fish´ent]
1. an expression of the change or effect produced by the variation in certain variables, or of the ratio between two different quantities.
2. in chemistry, a number or figure put before a chemical formula to indicate how many times the formula is to be multiplied.
Bunsen coefficient the number of milliliters of gas dissolved in a milliliter of liquid at atmospheric pressure (760 mm Hg) and a specified temperature. Symbol, α.
confidence coefficient the probability that a confidence interval will contain the true value of the population parameter. For example, if the confidence coefficient is 0.95, 95 per cent of the confidence intervals so calculated for a large number of random samples would contain the parameter.
correlation coefficient a numerical value that indicates the degree and direction of relationship between two variables; the coefficients range in value from +1.00 (perfect positive relationship) to 0.00 (no relationship) to −1.00 (perfect negative or inverse relationship).
diffusion coefficient see diffusion coefficient.
coefficient of digestibility the proportion of a food that is digested compared to what is absorbed, expressed as a percentage.
dilution coefficient a number that expresses the effectiveness of a disinfectant for a given organism. It is calculated by the equation tcn = k, where t is the time required for killing all organisms, c is the concentration of disinfectant, n is the dilution coefficient, and k is a constant. A low coefficient indicates the disinfectant is effective at a low concentration.
linear absorption coefficient the fraction of a beam of radiation absorbed per unit thickness of absorber.
mass absorption coefficient the linear absorption coefficient divided by the density of the absorber.
phenol coefficient see phenol coefficient.
sedimentation coefficient the velocity at which a particle sediments in a centrifuge divided by the applied centrifugal field, the result having units of time (velocity divided by acceleration), usually expressed in Svedberg units (S), which equal 10−13 second. Sedimentation coefficients are used to characterize the size of macromolecules; they increase with increasing mass and density and are higher for globular than for fibrous particles.

co·ef·fi·cient

(kō'ĕ-fish'ĕnt),
1. The expression of the amount or degree of any quality possessed by a substance, or of the degree of physical or chemical change normally occurring in that substance under stated conditions.
2. The ratio or factor that relates a quantity observed under one set of conditions to that observed under standard conditions, usually when all variables are either 1 or a simple power of 10.
[L. co- + efficio (exfacio), to accomplish]

coefficient

Vox populi A variable or factor which allows the calculation of a property or quantity of a substance under various conditions. See Absorption coefficient, Activity coefficient, Adsorption coefficient, Attenuation coefficient, Dice coefficient of similarity, Inbreeding coefficient, Intraclass correlation coefficient, Mass attentuation coefficient, Mass energy absorption coefficient, Octanol-water partition coefficient, Spearman's rank (order) correlation.

co·ef·fi·cient

(kō'ĕ-fish'ĕnt)
1. The expression of the amount or degree of any quality possessed by a substance, or of the degree of physical or chemical change normally occurring in that substance under stated conditions.
2. The ratio or factor that relates a quantity observed under one set of conditions to that observed under standard conditions, usually when all variables are either 1 or a simple power of 10.
[L. co- + efficio (exfacio), to accomplish]
References in periodicals archive ?
According to the results the maximum of friction coefficient (0.118) belongs to fuel blend B0 (neat diesel), and B10 and B20 have the minimum value of friction coefficient (0.097).
Friction coefficient reduces at lower rotational speeds with longer duration of testing time; because of that the contact surfaces of the test balls would be smoother and roughness in surfaces is lost or flattened, but it leads to be higher at higher rotational speeds under run-in period conditions due to degradation of fuel.
library(psych) set.seed(42) cong <- sim.congeneric(c(0.9,0.8,0.7,0.5), N=500, categorical = TRUE, short = TRUE, low=-3, high=3) The alpha and omega coefficients are then calculated using the congeneric measurement model:
Influence of the wood moisture content on the friction coefficient
Instead of developing a physical model accounting for recirculation, slip, disc friction, and other physical inputs, energy transfer coefficient vs.
The mean square errors every 15 DIM in M1 for Model_all were more than 5% larger than those for Model_M1 at the same DIM after 186 days in the first lactation (Figure 2A) and after 201 days in later lactations (Figure 2B) even though the order of RR coefficients of Model_all was highest among the models in this study.
At the height-retaining leg held forward at 90[degrees] test, the experimental group obtained an average of 12.9 [+ or -] 4.38 seconds with a coefficient of variation of 13.909%, while the control group obtained at the same test an average of 10.8 [+ or -] 2.44 seconds, with a coefficient of variation of 7.408%.
To define a new correlation coefficient measure and a new weighted correlation coefficient measure in IBNS environment and prove their basic properties.
Since in S coefficients the highest energetic portion is located in S (1, 1), the image blocking can be a good idea.
Luebbers was one of the first to establish heuristic diffraction coefficients for lossy conducting wedges [3].
As we assumed that the induced velocity is small compared with the freestream velocity, then cos [[alpha].sub.i] = 1 and sin [[alpha].sub.i] = [[alpha].sub.i], therefore the section lift coefficient would be calculated by using (3) easily, then the induced drag of the two wings, [D.sub.i1] and [D.sub.i2], can be written as
It could be noted that the transmission energy coefficient equals to the irreversible energy coefficient with a JMC of 0.5.