overhead

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overhead

Nautical the interior lining above one's head below decks in a vessel

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)

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.

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.
References in periodicals archive ?
I was able to clearly see changes and manage those overheads and costs whose percentages changed.
If Overheads Percentage is an important indicator of financial health, how can you improve it?
These items, combined with the traditional overhead projector, are used for presentations of quality data to the medical staff and the board of directors.
Understanding overhead, or information work, requires a step-by-step approach.
Ford management aggressively tackled the issue of management overhead in the late 1970s and early 1980s.
PHILADELPHIA -- The overhead costs involved in clinical trials represent significant expenses that can vary widely across the globe.
description of the basic structure of the STM-1frame including the number and location of payload and overhead bytes and an explanation of the standard (ITU-T) method of representing the frame structure.
function of those STM section and path overheads used by ATM equipment.
Accent Presentations is a business graphics service bureau dedicated to quality output of 35mm slides, slide duplication, digital color prints and overheads, color posters, trade show signage, conference signs, E6 film processing and camera work.
1, 1995--Due largely to their relative low cost, ease of use, and user flexibility, the overhead projector will continue to serve communications professionals as the workhorse presentation format for the rest of this decade.