Regeneration

In telecommunication, the term regeneration has the following meanings:
- In a regenerative repeater, the process by which digital signals are amplified, reshaped, retimed, and retransmitted. A synonym for this meaning is "positive feedback."
- In a storage or display device, the restoration of stored or displayed data that have deteriorated. For example, conventional cathode ray tube displays must be continually regenerated for the data to remain displayed.
- In computer graphics, the sequence of events needed to generate a display image from its representation in storage.
- See also Regenerative circuit, Feedback
In inner-city development, the improving of a poor or run-down area by a programme of investment in areas such as infrastructure or housing.
Regeneration is the title of a novel by Pat Barker. See Regeneration (book).
In science fiction, regeneration is most famously associated with the Doctor Who mythology. When the role's original actor William Hartnell left the series due to decreasing health, rather than replace him with a lookalike, it was decided to introduce the idea that the Doctor has a certain number of lives, thus the extreme contrasts between the various actors playing the role. There have already been eight actors to play the role with a ninth one on the way and the show's mythology allows for twelve regenerations for a total of 13 Doctors.
In Stirling engines, regeneration is the cycling of heat between the working gas and the regenerator, typically a block of metal wool.

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