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In semiotics, signified and signifier (French: signifié and signifiant) are the two main components of a sign, where signified is what the sign represents or refers to, known as the "plane of content", and signifier which is the "plane of expression" or the observable aspects of the sign itself.
Icons are those signs that signify by means of similarity between sign vehicle and sign object (e.g. a portrait or map), indices are those that signify by means of a direct relation of contiguity or causality between sign vehicle and sign object (e.g. a symptom), and symbols are those that signify through a law or arbitrary social convention.
Signal refers to both the process and the result of transmission of data over some media accomplished by embedding some variation. Signals are important in multiple subject fields including signal processing, information theory and biology. In signal processing, a signal is a function that conveys information about a phenomenon. [1]
A signal strength and readability report is a standardized format for reporting the strength of the radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another station as received at the reporting station's location and by their radio station equipment. These report ...
The signal-to-noise ratio of a random variable (S) to random noise N is: [1] = [] [], where E refers to the expected value, which in this case is the mean square of N. If the signal is simply a constant value of s, this equation simplifies to:
In New Zealand, where they drive on the left, when a road is given a green light from an all direction stop, a red arrow can continue to display to turning traffic, holding traffic back while the pedestrian crossing on the side road is given a green signal (for left turns) or while oncoming traffic goes straight ahead and there is no permissive right turn allowed (for right turns).
This is to signal the "end" of a meal which is called "Shime (〆(しめ))" in Japanese. The crossed fingers represent this kanji resembling an "X". [14] A clenched fist. Chinese number gestures are a method of using one hand to signify the natural numbers one through ten. Clenched fist is used as a gesture of defiance or solidarity. Facing the ...
The name of an active-low signal is historically written with a bar above it to distinguish it from an active-high signal. For example, the name Q, read Q bar or Q not, represents an active-low signal. The conventions commonly used are: a bar above (Q) a leading slash (/Q) a leading exclamation mark (!Q)