overhead

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overhead

Nautical the interior lining above one's head below decks in a vessel
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

overhead

[′ō·vər‚hed]
(chemical engineering)
Pertaining to fluid (gas or liquid) effluent from the top of a process vessel, such as a distillation column.
(computer science)
The time a computer system spends doing computations that do not contribute directly to the progress of any user tasks in the system, such as allocation of resources, responding to exceptional conditions, providing protection and reliability, and accounting.
(industrial engineering)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

overhead

(1)
Resources (in computing usually processing time or storage space) consumed for purposes which are incidental to, but necessary to, the main one. Overheads are usually quantifiable "costs" of some kind.

Examples: The overheads in running a business include the cost of heating the building. Keeping a program running all the time eliminates the overhead of loading and initialising it for each transaction. Turning a subroutine into inline code eliminates the call and return time overhead for each execution but introduces space overheads.

overhead

(communications)
information, such as control, routing, and error checking characters, that is transmitted along with the user data. It also includes information such as network status or operational instructions, network routing information, and retransmissions of user data received in error.

overhead

(3)
Overhead transparencies or "slides" (usually 8-1/2" x 11") that are projected to an audience via an overhead (flatbed) projector.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

overhead

(1) The amount of processing time used by system software such as the operating system, database manager or network protocols.

(2) In communications, the additional codes transmitted for control and error checking, which take time to process.
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References in periodicals archive ?
This implies that the contractors perceive that almost all the factors investigated significantly influence the amount of the various types of project overheads by directly or indirectly exerting pressure on the amount of the various project overhead costs.
Supervision costs, cost of rework, equipment management costs, general field expenses and temporary works and services costs were found to be prominent overheads costs that their amount affect cost, time and quality performance of projects.
The following figures are given for Dee Co, which has one department, machining: Dee Co Budget Machining department Budget Production overheads $180,000 Machine hours 45,000 Direct labour hours 7,500 Actual results Production overheads $175,000 Machine hours 42,500 Direct labour hours 8,000
The OAR is based on budgeted figures, of course, and the actual machine hours worked and the actual overheads may well differ from those budgeted.
If such circumstances were not met, or the charges were not "so abnormal," these charges typically would be included in fixed overhead and recognized as part of cost of goods sold when the related inventory is sold.
Because the academy has no financial self-interest in changing this system, CBOs need to construct incentives by refusing to collaborate with institutions unless overhead percentages are reasonable and ethically set.
As features and functionality increase, and price and size decrease, these devices are migrating from merely replacing overhead projectors to connecting the four-walled classrooms to the outside world.
Packetization is now combined with another feature called Quick Arbitration (QA), which significantly reduces overhead associated with arbitration.
Our past presentations involved a complex process of producing overhead transparencies.
The difference between the allowed expense and the overheads absorbed into actual production at the standard overhead rate--the absorbed expense--is the non-controllable or volume variance.
The internal result may well be similar to the change that was made in telephone billing when central overhead costs were charged back to individual units based on their share of the total system.
Typically, corporate accounting practices lump overhead elements such as management and administration into a huge overhead bucket for reporting in financial statements.