selective fading - определение. Что такое selective fading
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Что (кто) такое selective fading - определение

VARIATION OF THE ATTENUATION OF A SIGNAL WITH VARIOUS VARIABLES
Selective fading; Fade (radio); Signal fade; Flat fading; Upfade; Fading channel; Fast fading; Slow fading; Frequency-selective fading; Frequency selective fading; Shadow fading; Dispersive fading; Amplitude fading; Doppler Spread; Doppler spread
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  • Frequency-selective time-varying fading causes a cloudy pattern to appear on a [[spectrogram]]. Time is shown on the horizontal axis, frequency on the vertical axis and signal strength as grey-scale intensity.
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Fading         
·noun Loss of color, freshness, or vigor.
II. Fading ·noun An Irish dance; also, the burden of a song.
III. Fading ·adj Losing freshness, color, brightness, or vigor.
IV. Fading ·p.pr. & ·vb.n. of Fade.
Fading         
In wireless communications, fading is variation of the attenuation of a signal with various variables. These variables include time, geographical position, and radio frequency.
Rayleigh fading         
  • Densely built Manhattan has been shown to approach a Rayleigh-fading environment.
  • The normalized Doppler power spectrum of Rayleigh fading with a maximum Doppler shift of 10 Hz.
  • Filtered by Butterworth filter Rayleigh time series (sampling frequency is 120 Hz)
  • One second of Rayleigh fading with a maximum Doppler shift of 100 Hz.
  • One second of Rayleigh fading with a maximum Doppler shift of 10 Hz.
STATISTICAL MODEL
Jakes fading model
Rayleigh fading is a statistical model for the effect of a propagation environment on a radio signal, such as that used by wireless devices.
Selective auditory attention         
THE FOCUS ON A SPECIFIC SOURCE OF A SOUND OR SPOKEN WORDS
Selective hearing; Selective deafness; User:Spicysugar07/Selective Auditory Attention; Wikipedia talk:Articles for creation/Selective Auditory Attention; Selective Auditory Attention
Selective auditory attention or selective hearing is a type of selective attention and involves the auditory system. Selective hearing is characterized as the action in which people focus their attention intentionally on a specific source of a sound or spoken words.
selective service         
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  • military segregated]].
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  • The former seal of the Selective Service System
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  • Selective service information available in a local post office in [[Boston, Massachusetts]]
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US FEDERAL GOVERNMENT AGENCY THAT MAINTAINS INFORMATION ON THOSE POTENTIALLY SUBJECT TO MILITARY CONSCRIPTION
Selective Service; 3-A deferment; Selective service; Class 1-A; 4F (military conscription); U.S. Selective Service; 4-F (US Military); Military deferment; Student deferment; Selective Service Administration; Selective Service Board; 4-F (Selective Service System); Class 1-Y; Selective Service registration; Selective Service Number; Selective Service System classification; Selective Service Draft Act; Director of Selective Service; D.S.S. Form 1
In the United States, selective service is a system of selecting and ordering young men to serve in the armed forces for a limited period of time.
N-UNCOUNT
selective service         
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  • military segregated]].
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  • The former seal of the Selective Service System
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  • Selective service information available in a local post office in [[Boston, Massachusetts]]
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US FEDERAL GOVERNMENT AGENCY THAT MAINTAINS INFORMATION ON THOSE POTENTIALLY SUBJECT TO MILITARY CONSCRIPTION
Selective Service; 3-A deferment; Selective service; Class 1-A; 4F (military conscription); U.S. Selective Service; 4-F (US Military); Military deferment; Student deferment; Selective Service Administration; Selective Service Board; 4-F (Selective Service System); Class 1-Y; Selective Service registration; Selective Service Number; Selective Service System classification; Selective Service Draft Act; Director of Selective Service; D.S.S. Form 1
¦ noun N. Amer. service in the armed forces under conscription.
Selective PPAR modulator         
DRUG CLASS
Selective PPARγ modulator; Selective PPARγ modulators; SPPARM; SPPARMs; Selective PPAR modulators
A selective PPAR modulator (SPPARM) is a selective receptor modulator of the peroxisome proliferator-activated receptor (PPAR). Examples include SPPARMs of the PPARγ, BADGE, EPI-001, INT-131, MK-0533, and S26948.
Selective estrogen receptor modulator         
  •  4-Hydroxytamoxifen (red) overlaid with 17β-estradiol (black)
  •  Bazedoxifene includes an indole system (red) which is connected to an amine through a benzyloxyethyl chain (green).
  •  ''trans''-Form of clomifene with the triphenylethylene structure in red.
  •  Chemical structure of lasofoxifene shows cis-oriented phenyls.
  •  Chemical structure of nafoxidine with the dihydronapthalene group in red.
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  •  Chemical structure of ospemifene. Ethoxy side chain ends with a hydroxy group (red) instead of a dimethylamino group as with first-generation SERMs.
  • "A ring" (A) and "D ring" (D) marked in raloxifene.
GROUP OF COMPOUNDS ABLE TO BIND AND ACTIVATE ESTROGEN RECEPTORS, BUT ACTING AS EITHER AN AGONIST OR ANTAGONIST
Selective oestrogen receptor modulator; Selective estrogen receptor modulators; Oestrogen receptor beta; Selective oestrogen receptor modulators; Selective ER modulator; Selective Estrogen Receptor Modulators (SERMs); Estrogen-receptor modulator; Selective estrogen-receptor modulator; Discovery and development of selective estrogen receptor modulators; Draft:Selective estrogen receptor modulator; Estrogen receptor agonist/antagonist; ERAA; Estrogen receptor agonists/antagonists; Estrogen receptor agonist/antagonists
Selective estrogen receptor modulators (SERMs), also known as estrogen receptor agonist/antagonists (ERAAs), are a class of drugs that act on the estrogen receptor (ER). A characteristic that distinguishes these substances from pure ER agonists and antagonists (that is, full agonists and silent antagonists) is that their action is different in various tissues, thereby granting the possibility to selectively inhibit or stimulate estrogen-like action in various tissues.
IgG deficiency         
FORM OF DYSGAMMAGLOBULINEMIA
Igg deficiency; Selective deficiency of immunoglobulin G
IgG deficiency is a form of dysgammaglobulinemia where the proportional levels of the IgG isotype are reduced relative to other immunoglobulin isotypes. IgG deficiency is often found in children as transient hypogammaglobulinemia of infancy (THI), which may occur with or without additional decreases in IgA or IgM.
Ion-selective electrode         
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SENSOR THAT CONVERTS THE ACTIVITY OF A SPECIFIC ION DISSOLVED IN A SOLUTION INTO AN ELECTRICAL POTENTIAL
ISE electrode; Ion-selective membranes and electrodes; Ion selective electrodes; Ion-selective membrane; Ion selective membrane; Cyanide selective combination electrode; Ion Selective electrode; Ion-selective electrodes; Specific ion electrode; Ion selective electrode
An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a transducer (or sensor) that converts the activity of a specific ion dissolved in a solution into an electrical potential. The voltage is theoretically dependent on the logarithm of the ionic activity, according to the Nernst equation.

Википедия

Fading

In wireless communications, fading is variation of the attenuation of a signal with various variables. These variables include time, geographical position, and radio frequency. Fading is often modeled as a random process. A fading channel is a communication channel that experiences fading. In wireless systems, fading may either be due to multipath propagation, referred to as multipath-induced fading, weather (particularly rain), or shadowing from obstacles affecting the wave propagation, sometimes referred to as shadow fading.