# sector

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## sector

1. Geometry either portion of a circle included between two radii and an arc. Area: ½r2θ, where r is the radius and θ is the central angle subtended by the arc (in radians)
2. a measuring instrument consisting of two graduated arms hinged at one end
3. Computing the smallest addressable portion of the track on a magnetic tape, disk, or drum store

## Sector

(1) A sector in the plane is a region bounded by two rays issuing from an interior point of a figure and by an arc of its boundary cut off by these rays. In particular, a sector of a circle is bounded by two radii and an arc cut off by the radii. The area of a sector of a circle is equal to lr/2 or πr2α /360, where l is the length of the arc, α is the central angle (in degrees) subtended by the arc, and r is the radius of the circle.

(2) A sector in space is the part of a solid bounded by a conical surface whose vertex is in the solid and by the part of the solid’s surface cut off by the conical surface. A spherical sector is an example of a sector in space.

## sector

[′sek·tər]
(computer science)
A portion of a track on a magnetic disk or a band on a magnetic drum.
A unit of data stored in such a portion.
(civil engineering)
A clearly defined area or airspace designated for a particular purpose.
(electromagnetism)
Coverage of a radar as measured in azimuth.
(mathematics)
A portion of a circle bounded by two radii and an arc joining their end points.
(meteorology)
Something resembling the sector of a circle, as a warm sector between the warm and cold fronts of a cyclone.

## sector

The smallest unit of data that is written to and read from a storage drive. The initial hard disk sector sizes were 128 and 256 bytes long but were later increased to 512. Eventually, sectors were enlarged to the "Advanced Format" size of 4,096 bytes. See cluster, sector interleave and magnetic disk.
References in periodicals archive ?
Cummins (2000) reviews different methods of allocating capital to lines of business and concludes that:</p> <pre> more research is needed to determine which model is more consistent with value maximization.
4) For plan years beginning before this date but after 1986 (when section 414(r) was enacted), an employer qualifies as operating separate lines of business if the employer "reasonably determines" that it meets the requirements of section 414(r) (other than the requirements of administrative scrutiny under section 414(r)(2)(C)), or complies with the terms of the regulations under that section (with the same exception of the administrative scrutiny requirement).
In the most recent cycle, carriers adopted a strategy of entering specialty lines of business to increase profits.
TEI believes that the regulations fail to appreciate the extent to which employers operate distinct, separate lines of business and the legitimate non-tax motivations for adopting disparate, independent benefit plans for each line.
As in the proposed regulations, the final regulations give employers a great deal of discretion in determining how many lines of business are being operated.
Empowering the lines of business, with greater control of content, increasing content freshness, enabling seamless content reuse and delegation of content creation within individual business units (inbuilt templates and approval mechanisms ensuring corporate standard and consistency are maintained).
The Guidewire Insurance Suite[TM] consists of Guidewire ClaimCenter, Guidewire PolicyCenter[R], and Guidewire BillingCenter[TM], which provide a modern, web-based platform for all lines of business.
Table 8: Application hosting outsourcing by lines of business, 2002-2008
With the current solution banks can either go for streamlining their pricing and billing functions for a line of business across geographies or, go for a turnkey rollout of Relationship-based pricing and billing for all lines of business and geographies.
Best expects results in individual lines of business to improve over the next few years.
Although the suitability of outsourcing to achieve business objectives varies by lines of business.
ClaimCenter supports the end-to-end claims process for Merastar's personal lines of business.

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