function

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Related to Probability density function: Probability distribution function

function

 [fungk´shun]
the special, normal, or proper action of any part or organ.
bowel function in the omaha system, the ability of the intestine to digest food and evacuate waste.
genitourinary function in the omaha system, the ability of the sexual organs to reproduce and of the kidneys, ureters, bladder, and urethra to produce and excrete urine.
neuro-musculo-skeletal function in the omaha system, a client problem in the physiologic domain, defined as the ability of nerves, muscles, and bones to perform or coordinate specific activities.
probability density function in statistics, a mathematical function that describes the distribution of measurements for a population. It is a curve that describes the population.

func·tion (f),

(fŭnk'shŭn),
1. The special action or physiologic property of an organ or other part of the body.
2. To perform its special work or office, said of an organ or other part of the body.
3. The general properties of any substance, depending on its chemical character and relation to other substances, according to which it may be grouped (for example, acids, bases, alcohols, esters).
4. A particular reactive grouping in a molecule, for example, a functional group, such as the -OH group of an alcohol.
5. A quality, trait, or fact that is so related to another as to be dependent on and to vary with this other.
6. A mathematic variable or expression.
[L. functio, fr. fungor, pp. functus, to perform]

function

/func·tion/ (funk´shun)
1. the special, normal, or proper physiologic activity of an organ or part.
2. to perform such activity.
3. in mathematics, a rule that assigns to each member of one set (the domain) a value in another set (the range).

function

(fŭngk′shən)
n.
1. The special action or physiological property of an organ or a body part.
2. Something closely related to another thing and dependent on it for its existence, value, or significance, such as growth resulting from nutrition.

function

[fungk′shən]
Etymology: L, functio, performance
1 n, an act, process, or series of processes that serve a purpose.
2 v, to perform an activity or to work properly and normally.

function

Vox populi The activity of a system. See Cognitive function, Core function, Hotel function, Sexual function.

func·tion

(fŭngk'shŭn)
1. The special action or physiologic property of an organ or other part of the body.
2. To perform its special work or office, said of an organ or other part of the body.
3. The general properties of any substance, depending on its chemical character and relation to other substances, according to which it may be grouped among acids, bases, alcohols, esters, or other groups.
4. A particular reactive grouping in a molecule; e.g., a functional group, such as the -OH group of an alcohol.
5. A quality, trait, or fact that is so related to another as to be dependent on and to vary with this other.

function

1. The particular action of an organ or tissue. 2. Any two variables in which the value of one depends upon the value of the other.
contrast sensitivity f . (CSF) The graphical representation of contrast sensitivity for the detection of a sine wave grating from a uniform field as a function of its spatial frequency. It is done by reducing the contrast of a grating until it can no longer be resolved (this point represents the contrast threshold) and repeating the procedure for a number of different spatial frequencies. The contrast sensitivity (1/contrast threshold) is plotted against spatial frequency (Fig. F10). The CSF is greatest at a spatial frequency around 3 cycles/degree and the point where the curve intercepts the spatial frequency axis (called the cut-off frequency) represents the standard visual acuity of the subject at 100% contrast. See contrast sensitivity chart; spurious resolution; contrast sensitivity.
line-spread f . A mathematical description of the distribution of light across the image of a very thin bright line object. On the retina the image of a thin bright slit spreads over a distance subtending about six minutes of arc at which point the intensity is less than two log units below the maximum.
modulation transfer f . (MTF) A relationship between the spatial frequency of an image (e.g. in number of cycles per degree or lines per inch) and the modulation amplitude (i.e. the difference between the luminance at the peaks and troughs of a grating). This gives an indication of the ability of a lens to resolve a grating. The greater the quality of a lens, the higher the spatial frequency at which the modulation amplitude falls to zero. At this point the lens can no longer transfer spatial modulation of intensity from the object to the image and the image appears as a uniform intensity distribution. This technique has been applied to assess the quality of the retinal image by measuring the contrast sensitivity function.
point-spread function  (PSF) The mathematical description of the light distribution across the image of a point source. The shape and width of the function depends upon the amount of diffraction, aberrations and scatter and in the eye, the shape of the pupil. Its shape, which resembles a normal distribution, is conventionally defined by its 'half-width', being the width of the curve at half the peak luminance. If only diffraction is considered the point-spread function is known as Airy's disc.See Fig. D5
Fig. F10 Typical contrast sensitivity function of an adult human eye (O, cut-off frequency) (both scales are logarithmic)enlarge picture
Fig. F10 Typical contrast sensitivity function of an adult human eye (O, cut-off frequency) (both scales are logarithmic)

func·tion

(fŭngk'shŭn)
1. Special action or physiologic property of an organ or other body part.
2. General properties of any substance, depending on its chemical character and relation to other substances.

function

1. the special, normal or proper action of any part or organ.
2. a variable quantity whose value at any time can be determined by the value at that time of some other variable because there is a fixed mathematical relationship between them. The first variable is said to be a function of the second.

function abnormality
the basis of all disease; structural abnormalities are important only insofar as they impede normal function.
function tests
tests which assess the efficiency of functions of the organ, e.g. liver function, renal function tests, glucose tolerance, xylose absorption tests.

Patient discussion about function

Q. how can models function without eating? whenever I skip lunch I find that I am not feeling well by the afternoon, and according to a magazine I read they basically live on ice(!), diet coke, champaign and cigarettes…

A. Champaign (as all alcoholic drinks) actually contains a significant amount of calories... :-) No one can function with out eating AT ALL, but they do get more used to eating LESS, and their body adjust itself (i.e. uses the food more efficiently) - it's harmful and may damage them in the short and long term, but it's possible.

Q. if a liver has been damaged can it go back to function as normal?

A. the liver is an amazing organ. it's cells divide usually once a year but if it needs, it can recover in a miraculously manner. but it depends on how much damage you did. there is a point that it can go no further. but alcoholism cause cirrhosis. this is scar tissue in the liver- that i'm afraid is not reversible. and most of it's side effects are not too.

Q. Last year my doctor diagnosed that my kidney was not functioning well. Can anyone help me? I’m 50 year old male. Last year my doctor diagnosed that my kidney was not functioning well. I intake western medicine for past one year, but I’m not satisfied with that. I like to move to some other treatment. Can anyone help me?

A. Hello Jude, I understand your problem and I do have a similar issue. Initially I was trying with the western meds and it did not give me the desired results. I have skipped them now and have been taking Chinese herbal medicine and trust me I feel much better. Consult a TCM doctor before taking any supplements to improve your kidneys. I wish you to get well soon!!!

More discussions about function
References in periodicals archive ?
Mean velocity and suspended sediment concentration profile model of turbulent shear flow with probability density function.
Dirlik's stress probability density function parameters are
In the following, we will define the discrete counterpart of the probability density function (3.
When in the Weibull probability density function k = 2, the Rayleigh probability density function can be obtained.
The probability density function (1) can be rewritten in a more convenient form for further derivation as
The aim of the stochastic watershed Angulo and Jeulin (2007) is to estimate for each point of the contours of a standard watershed a probability (called here probability density function of contours) of detection from random markers.
The relative entropy may be interpreted as the probability of drawing a sample with probability density function p from a random generator with a governing probability density function of q.
1) Dealing with the anomalous values of the Eaton index vector properly, then substituting the Eaton index into the Eaton formula for Monte Carlo simulation, finally the formation pore pressure matrix would be determined by statistically analyzing the results of Monte Carlo simulation; (2) Making statistical analysis directly of the Eaton index vector, then calculating the probability density function, and the distribution function of the formation pore pressure will be directly calculated by the union probability calculation method[9].
Calculating the probability density function and comparing it with the optimum density function enables one to draw conclusions about necessary measures to adjust the voltage level--adjustment of transformer taps or reinforcing the supply circuit (transformer and lines) or improving reactive power compensation.
The prediction of the tank position and orientation after it comes to a complete stop and can explode consists in the choice of either joint probability density function f([y.

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