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(operating system)
To move a program from fast-access memory to a slow-access memory ("swap out"), or vice versa ("swap in"). The term often refers specifically to the use of a hard disk (or a swap file) as virtual memory or "swap space".

When a program is to be executed, possibly as determined by a scheduler, it is swapped into core for processing; when it can no longer continue executing for some reason, or the scheduler decides its time slice has expired, it is swapped out again.

This contrasts with "paging" systems in which only parts of a program's memory is transfered.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

SWAP (severe weather avoidance plan)

An approved plan to minimize the effect of severe adverse weather to traffic flows in affected terminal and/or ARTCC (air traffic control center) areas. This plan is put into operation when flight through an airspace is either not possible or is difficult. Such a plan should cause minimum disruption.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved


(HOME Radio Frequency) A wireless technology from the HomeRF Working Group, Portland, OR, founded in 1998 by Compaq, IBM, HP and others. In early 2003, the Group disbanded due to lack of interest in competing against the Wi-Fi standard. The HomeRF open standard used the Shared Wireless Access Protocol (SWAP) to transmit in the unlicensed 2.4 GHz band between mobile and desktop devices within a range of 150 feet at 1 or 2 Mbps. Up to 127 devices could be addressed. Derived from the Digital European Cordless Telephone (DECT) standard, HomeRF used a frequency hopping technique that changed 50 times per second. Each 20 ms frame contained one CSMA/CA slot for data and six full-duplex TDMA slots for voice. See wireless LAN and Wi-Fi.
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References in periodicals archive ?
Baddour, D-Methuen, chairman of the Senate Transportation Committee, said the approval of the credit proposal would "stave off potential catastrophe" for taxpayers and toll payers as payments on the swap option finance deal are expected to dramatically escalate in the coming months.
During a rare joint work session with the Lane County Board of Commissioners, the council appeared set to agree to a city-county task force that would study land swap options in the coming weeks and months.
Indian lender, IndusInd Bank (NSE: INDUSINDBK), plans to exploit Reserve Bank of India's window of swap options, to raise USD300m from overseas investors.
Dozens shouted their message in unison at the start of the meeting, calling on state officials to "tax the rich" and halt multimillion-dollar payments to banks for interest rate swap options, or "swaptions," before resorting to service cuts and higher fares.
That could include higher interest rates or equity swap options to persuade creditors to give up claims to key assets, like the profitable port operator.