Scan
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2008-07-15T16:31:44Z
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{{wiktionarypar|scan}}
'''Scan''' may refer to:
*Scan, the act of examining sequentially, part by part
*[[Image scanning]], in data processing, the act of optically analyzing a two or three dimensional image and digitally encode it ([[digitize]] it) for storage in a computer file
*Scan, the resulting computer file from [[image scanning]] (commonly used in the [[anime]] and [[manga]] art communities)
*Scan, to examine successively every character or [[bit]] in a digital computer file as part of a data retrieval function, also in data processing
*Scan, in [[data parallel]] programming languages such as [[APL (programming language)|APL]] and [[J programming language|J]] for prefix/suffix reduction operations. One variant is known as a [[prefix sum]].
*Scan, to subject a document to the process of [[Optical character recognition|OCR]] including optical recognition of printed text or printed sheet music
*Scan, in [[radar]], one complete rotation of the interrogating [[antenna (electronics)|antenna]]
*Scan, in [[sonar]], to search 360° or a specific search sector by the use of a [[phased array]] of transducers
*Scan, to sweep or rotate a [[beam]] about a point or about an axis
*Scan, to analyze [[writing]] and [[Verse (poetry)|verse]] regarding [[rhythm]]ic and especially [[Meter (poetry)|metrical]] structure.
*Scan, a common name for [[medical ultrasonography]], the medical procedure for examining internal structures, especially when applied to developing foetuses in the womb.
*Scan, as it applies to other types of medical imaging, particularly [[computed tomography]] or [[magnetic resonance imaging]].
*SCAN, an acronym for [http://www.mbatoolbox.org/stories/storyReader$19 Strategic Creative Analysis]
*Scan, a Swedish meat company, see http://www.scan.se
*''[[Scan (Prison Break episode)]]'', an episode of the television series ''[[Prison Break]]''
*[[SCAN]], a psychiatric diagnostic tool developed by [[WHO]].
*[[SCAN Health Plan]], a Californian [[HMO]].
*[[Shared Check Authorization Network]], a database of bad check writers and [[collection agency]] for [[bad check]]s
*[[Port scanner]] in computer networking
*'''Scan''' (1988-) is an [[United States|American]] [[thoroughbred]] [[racehorse]] and [[stallion]].
'''Scanning''' may refer to:
*Scanning, in [[television]], [[Fax|facsimile]], and picture [[transmission (telecommunications)|transmission]], the process of sequentially encoding the [[luminosity]] and optionally the color of a picture or scene, line by line into an electronic signal. It also refers to remotely reconstructing the picture or scene on a display device.
*Scanning, in [[telecommunication]]s, the process of rapidly [[tuner (radio)|tuning]] a radio receiver through a predetermined range of frequencies to select an active radio broadcast. Scanning may be performed manually or automatically.
*[[Counter-scanning]], in physical micro and nanotopography measuring instruments like [[scanning tunneling microscope]], [[atomic force microscope]], etc., a way to eliminate image distortions caused by slow drift of the instrument probe relative to a measured sample surface.
*Scanning, in [[radar]] and [[radio direction-finding]], the [[slewing]] of an [[antenna (electronics)|antenna]] or [[radiation pattern]] for the purpose of probing in a different direction. In radar, scanning may be mechanical, using a rotary [[microwave]] joint to [[feed]] the antenna, or electronic, using a [[phased array]] of radiators, the radiated pattern ([[beam]]) of which depends on the relative phases of the signals fed to the individual radiators. In civilian air traffic control radar, scanning usually implies continuous rotation of the antenna or beam about a vertical axis. In military radars, scanning may occur about other than a vertical axis, and may not encompass a full 360°.
*Scanning, in teaching reading, the technique for quickly finding specific information in a text while ignoring its broader meaning.
*Scanning, in the [[semiconductor electronics]] testing industry, to test the logic used in an integrated circuit in a non-functional method by using a special test mode. This mode generally changes the configuration of the device being tested to look more similar to a large shift register. Logical blocks are then tested by loading and unloading this register. (See for instance [[JTAG]] Boundary Scan.)
*Scanning, a term for the medical technique for [[Computed axial tomography|body imaging]].
*Scanning, the term for the lowest-level work of a software [[compiler]], putting together the individual characters of the text of a [[computer program]] to form [[lexeme]]s.
*Scanning, a behaviour in which [[prey]] animals look around for possible [[predator]]s.
==See also==
*[[scanner]]
==References==
*Definitions related to telecommunications are from [[Federal Standard 1037C]] in support of [[MIL-STD-188]]
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[[Category:Microscopes]]
[[Category:Nanotechnology]]
[[de:Scannen]]