overlay


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overlay

an applied decoration or layer, as of gold leaf
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

overlay

[′ō·vər‚lā]
(civil engineering)
A repair topping of asphalt or concrete placed on a worn roadway.
(computer science)
A technique for bringing routines into high-speed storage from some other form of storage during processing, so that several routines will occupy the same storage locations at different times; overlay is used when the total storage requirements for instructions exceed the available main storage.
(engineering)
Nonwoven fibrous mat (glass or other fiber) used as the top layer in a cloth or mat lay-up to give smooth finish to plastic products or to minimize the fibrous pattern on the surface. Also known as surfacing mat.
An ornamental covering, as of wood or metal.
(graphic arts)
A sheet attached to copy or artwork and containing special instructions about reproduction or arrangement.
A transparent or translucent film attached to artwork and carrying additional detail to be reproduced; in multicolor printing these overlays may represent the separation of the colors to be printed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

overlay

As it pertains to the pavements, it is an additional surface course placed on existing pavement either with or without an intermediate base or sub-base course, usually to strengthen the pavement or restore the profile of the surface.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

overlay

(1) A preprinted, precut form placed over a screen, key or tablet for identification purposes. See keyboard template.

(2) A program segment called into memory when required. When a program is larger than the memory capacity of the machine, parts of the program not in constant use can be set up as overlays. Each overlay called in overwrites the existing overlay in memory. Virtual memory provides for automatic overlays. See virtual memory.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
It's been more than a year since Hall-Harper's overlay was approved.
In our proposed K-Minimum Spanning Tree with Super-Relay nodes algorithm (SR-KMST), the overlay nodes are composed of Ordinary-Relay nodes and Super-Relay nodes.
Overlays are still an area of exploration for network administrators, said Zeus Kerravala, principal analyst at ZK Research.
This could be as simple as adding a custom logo at a specific XY coordinate of a video at the time of transcoding, or a complex multi-step workflow that involves concatenating different source files, adding custom video or text overlays, and muxing closed caption files.
1 illustrates how semantic overlay topology can be affected, if we consider content popularity when selecting semantic neighbors.
Three patients (20%) from the underlay group and 1 patient (6.7%) from the overlay group had tinnitus.
The main objective of this paper is to design an overlay network with an Evolutionary Game Theory- (EGT-) based overlay topology evolution scheme and include this infrastructure into our proposed AD-CERN system with the following features:
He said the Planning Board is still seeking the zoning change for a solar overlay district.
Another more recent approach to using OpenFlow is to use it in combination with overlays. In this case, OF-Config is used to create overlay tunnels and OpenFlow is used to proactively install flows to steer packets into the tunnels.
Researchers evaluated statistically the impacts of overlay thickness, preparation prior to overlay and mix type on performance using data from LTPP SPS-5 and SPS-6 experiments.
Technical professional association IEEE reported today the approval by the IEEE Standards Association (IEEE-SA) Standards Board of a new framework for Internet Protocol (IP)-based service overlay networks.