sampling experiment - определение. Что такое sampling experiment
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Что (кто) такое sampling experiment - определение

DEVICE FOR MONITORING DRINKING WATER
Water Sampling Stations; Water sampling stations
Найдено результатов: 746
Snowball sampling         
NONPROBABILITY SAMPLING TECHNIQUE
Snowball sample; Respondent-driven sampling; Snowball method; Snowballed sample
In sociology and statistics research, snowball sampling (or chain sampling, chain-referral sampling, referral sampling (accessed 8 May 2011).Snowball Sampling, Changing Minds.
https://en.wikipedia.org/wiki/Snowball_sampling
Nyquist Theorem         
  • the sampled sequences are identical}}, even though the original continuous pre-sampled functions are not. If these were audio signals, <math>x(t)</math> and <math>x_A(t)</math> might not sound the same. But their samples (taken at rate ''f''<sub>s</sub>) are identical and would lead to identical reproduced sounds; thus ''x''<sub>A</sub>(''t'') is an alias of ''x''(''t'') at this sample rate.
  • The samples of two sine waves can be identical when at least one of them is at a frequency above half the sample rate.
  • A family of sinusoids at the critical frequency, all having the same sample sequences of alternating +1 and –1. That is, they all are aliases of each other, even though their frequency is not above half the sample rate.
  • Properly sampled image
  • Subsampled image showing a [[Moiré pattern]]
  • The figure on the left shows a function (in gray/black) being sampled and reconstructed (in gold) at steadily increasing sample-densities, while the figure on the right shows the frequency spectrum of the gray/black function, which does not change. The highest frequency in the spectrum is ½ the width of the entire spectrum. The width of the steadily-increasing pink shading is equal to the sample-rate. When it encompasses the entire frequency spectrum it is twice as large as the highest frequency, and that is when the reconstructed waveform matches the sampled one.
  • Spectrum, ''X<sub>s</sub>''(''f''), of a properly sampled bandlimited signal (blue) and the adjacent DTFT images (green) that do not overlap. A ''brick-wall'' low-pass filter, ''H''(''f''), removes the images, leaves the original spectrum, ''X''(''f''), and recovers the original signal from its samples.
  • x}}.
THEOREM
Nyquist theorem; Shannon sampling theorem; Nyquist sampling theorem; Nyquist's theorem; Shannon-Nyquist sampling theorem; Nyquist-Shannon Sampling Theorem; Nyqvist-Shannon sampling theorem; Sampling theorem; Nyquist Sampling Theorem; Nyquist-Shannon sampling theorem; Nyquist–Shannon theorem; Nyquist–Shannon Theorem; Nyquist Theorem; Shannon-Nyquist theorem; Nyquist sampling; Nyquist's law; Nyquist law; Coherent sampling; Nyqvist limit; Raabe condition; Nyquist-Shannon Theorem; Nyquist-Shannon theorem; Nyquist noise theorem; Shannon–Nyquist theorem; Kotelnikov-Shannon theorem; Kotelnikov–Shannon theorem; Nyquist-Shannon; Kotelnikov theorem; Nyquist's sampling theorem; Sampling Theorem; Nyquist Shannon theorem; Nyquist–Shannon–Kotelnikov sampling theorem; Whittaker–Shannon–Kotelnikov sampling theorem; Whittaker–Nyquist–Kotelnikov–Shannon sampling theorem; Nyquist-Shannon-Kotelnikov sampling theorem; Whittaker-Shannon-Kotelnikov sampling theorem; Whittaker-Nyquist-Kotelnikov-Shannon sampling theorem; Cardinal theorem of interpolation; WKS sampling theorem; Whittaker–Kotelnikow–Shannon sampling theorem; Whittaker-Kotelnikow-Shannon sampling theorem; Nyquist–Shannon–Kotelnikov; Whittaker–Shannon–Kotelnikov; Whittaker–Nyquist–Kotelnikov–Shannon; Nyquist-Shannon-Kotelnikov; Whittaker-Shannon-Kotelnikov; Whittaker-Nyquist-Kotelnikov-Shannon; Whittaker–Shannon sampling theorem; Whittaker–Nyquist–Shannon sampling theorem; Whittaker-Nyquist-Shannon sampling theorem; Whittaker-Shannon sampling theorem
<communications> A theorem stating that when an analogue waveform is digitised, only the frequencies in the waveform below half the sampling frequency will be recorded. In order to reconstruct (interpolate) a signal from a sequence of samples, sufficient samples must be recorded to capture the peaks and troughs of the original waveform. If a waveform is sampled at less than twice its frequency the reconstructed waveform will effectively contribute only noise. This phenomenon is called "aliasing" (the high frequencies are "under an alias"). This is why the best digital audio is sampled at 44,000 Hz - twice the average upper limit of human hearing. The Nyquist Theorem is not specific to digitised signals (represented by discrete amplitude levels) but applies to any sampled signal (represented by discrete time values), not just sound. {Nyquist (http://geocities.com/bioelectrochemistry/nyquist.htm)} (the man, somewhat inaccurate). (2003-10-21)
experiment         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn
I
n.
1) to carry out, conduct, perform, run an experiment on
2) a control; controlled experiment
3) a chemistry; physics experiment
II
v. (D; intr.) to experiment on, upon, with
Experiment         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn
·noun Experience.
II. Experiment ·vt To Try; to know, perceive, or prove, by trial experience.
III. Experiment ·vt To make experiment; to operate by test or trial;
- often with on, upon, or in, referring to the subject of an experiment; with, referring to the instrument; and by, referring to the means; as, to experiment upon electricity; he experimented in plowing with ponies, or by steam power.
IV. Experiment ·noun Atrial or special observation, made to confirm or disprove something doubtful; ·esp., one under conditions determined by the experimenter; an act or operation undertaken in order to discover some unknown principle or effect, or to test, establish, or illustrate some suggest or known truth; practical test; poof.
Experimentally         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn
·adv By experiment; by experience or trial.
Experimentation         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn
·noun The act of experimenting; practice by experiment.
experiment         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn
¦ noun
1. a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
2. a course of action tentatively adopted without being sure of the outcome.
¦ verb
1. perform a scientific experiment.
2. try out new things.
Derivatives
experimentation noun
experimenter noun
Origin
ME: from OFr., or from L. experimentum, from experiri 'try'; cf. experience and expert.
experiment         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn
(experimented)
Frequency: The word is one of the 3000 most common words in English.
1.
An experiment is a scientific test which is done in order to discover what happens to something in particular conditions.
The astronauts are conducting a series of experiments to learn more about how the body adapts to weightlessness...
This question can be answered only by experiment.
N-VAR
2.
If you experiment with something or experiment on it, you do a scientific test on it in order to discover what happens to it in particular conditions.
In 1857 Mendel started experimenting with peas in his monastery garden...
The scientists have already experimented at each other's test sites.
VERB: V with/on n, V
• experimentation
...the ethical aspects of animal experimentation.
N-UNCOUNT
• experimenter (experimenters)
When the experimenters repeated the tests on themselves, they observed an exactly opposite effect.
N-COUNT
3.
An experiment is the trying out of a new idea or method in order to see what it is like and what effects it has.
As an experiment, we bought Ted a watch.
N-VAR
4.
To experiment means to try out a new idea or method to see what it is like and what effects it has.
...if you like cooking and have the time to experiment...
He believes that students should be encouraged to experiment with bold ideas.
VERB: V, V with n
• experimentation
Decentralization and experimentation must be encouraged...
N-UNCOUNT
experimentation         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn
experimentally         
  • Astronaut [[David Scott]] performs a gravity test on the moon with a hammer and feather
  • black box model]] for observation (input and output are ''observables''). When there are a [[feedback]] with some observer's control, as illustrated, the observation is also an experiment.
  • Even very young children perform rudimentary experiments to learn about the world and how things work.
SCIENTIFIC PROCEDURE CARRIED OUT TO SUPPORT, REFUTE, OR VALIDATE A HYPOTHESIS
Laboratory Tests; Scientific experiment; Experimental; Experiments; Experimental group; Experimental science; Physics experiment; Physical experiment; Experimental research; Science experiments; Experimentally; Experimented; Experimenting; Experimental method; True experiment; Experimentation; Contrived experiment; Experimental study; Scientific experimentation; Experimental Science; Scientific experiments; Experimental sciences; Experimental studies; Laboratory experiment; Laboratory conditions; Experimetn

Википедия

Water sampling station

To enhance water quality monitoring in a drinking water network, water sampling stations are installed at various points along the network's route. These sampling stations are typically positioned at street level, where they connect to a local water main, and are designed as enclosed, secured boxes containing a small sink and spigot to aid in sample collection. Collected samples are analyzed for bacteria, chlorine levels, pH, inorganic and organic pollutants, turbidity, odor and many other water quality indicators.

In the United States, water sampling stations aid in public infrastructural safety in regards to water quality monitoring and help municipalities comply with federal and state drinking water regulations. New York City has 965 sampling stations that are distributed based on population density, water pressure zones, proximity to water mains and accessibility. The stations rise about 4½ feet above the ground and are made of heavy cast iron. Using these stations, the New York City Department of Environmental Protection (DEP) collects more than 1,200 water samples per month from up to 546 locations.

https://en.wikipedia.org/wiki/Water sampling station
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