static

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static,

term formerly use to describe electrical noisenoise,
any signal that does not convey useful information. Electrical noise consists of electrical currents or voltages that interfere with the operation of electronic systems.
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 in radio reception, especially noise that originates outside a transmitter and receiver, e.g., in the atmosphere or in human-made devices. In general, a frequency modulationmodulation,
in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in accordance with an information-bearing signal wave (the modulating wave); demodulation is the process by which the original signal is recovered from the wave
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 (FM) radio receiver is less susceptible to such noise than one using amplitude modulation (AM). Many receivers are equipped with devices, such as automatic limiting and silencing circuits, to lessen the effect of such noise on reception.

static

[′stad·ik]
(communications)
A hissing, crackling, or other sudden sharp sound that tends to interfere with the reception, utilization, or enjoyment of desired signals or sounds.
(physics)
Without motion or change.

static

i. Still, at rest, not moving, as in static pressure, static load, etc.
ii. Radio or other communication interference mainly the result of the discharge of electricity and appearing as background noise. It consists of amplitude-oriented spurious electromagnetic waves ranging in frequencies from a few hundred hertz to several thousand kilohertz. Atmospheric static is present in cumulonimbus clouds, thunderstorms, and precipitation. Lightning discharge is a most common source of static.
iii. A structural test with the application of a single increasing load done while the structure is at rest.

static

1. (of a weight, force, or pressure) acting but causing no movement
2. of or concerned with forces that do not produce movement
3. relating to or causing stationary electric charges; electrostatic
4. of or concerned with statics
5. Computing (of a memory) not needing its contents refreshed periodically
6. electric sparks or crackling produced by friction

static

(1) Fixed and unchanging. Contrast with dynamic.

(2) Interference or noise in a signal as in the unwanted disturbance in a radio signal. See noise.
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The free hexagon method was successfully applied to coupled modeling in underground structures, (Prochazka and Trckova, 2008), where only statical case was exploited.
Population and Housing Statical Facts (1996) The ministry of Social Affairs, Beirut, Lebanon.
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Sin embargo, en 1992 Shanxi adopto seriamente la reestructuracion economica y social con un efecto dramatico: despues de 1995, la tasa anual de crecimiento del PIB de Shanxi aumento consistentemente sobrepasando el promedio nacional (China Statical Yearbook, 1999: 57-67).
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