# 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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## 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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

## 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.
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References in periodicals archive ?
Therefore, if the services and agriculture sectors double their 2010-11 growth rates for the next three years, the industrial sector will need to grow at 10% annually to achieve the GRP aggregate growth rate of 8% by 2018.
Mian Zahid Hussain said that to cover the demand supply gap of gas, the government should increase import of LNG and as decided in the ECC meeting in November the proposed 150 - 200 MMCFD LNG should be included in the system to avoid load shedding of gas to the industrial sector, so that this important part of the economy can play its role in the economic growth of the Country and the industrial sector may further grow.
In alignment with the Ministry of Industry's MoI 2025 vision for the industrial sector, UNIDO's framework covers the following areas: supporting the development of Industrial parks, improving the competiA[degrees]tiveness of small- and medium-sized enterprises (SMEs) in the agro-industrial sector, promoting environmental sustainability and energy effiA[degrees]ciency, and supporting host communities in rural areas affected by the Syrian refugee crisis.
He said our government is giving income tax holiday for 10 years in industrial sector which will help to promote the industry.
The industrial sector , which was major employment generator during the decade of 2000-2010 , employed only 3 lakh people in the last seven years till the fiscal year 2016-17 .
Monthly detailed listings of contracts and tenders give readers unparalleled insight into the opportunities available in the region's industrial sector.
industrial sector to the GDP and push the wheel of development and
The industrial sector in Punjab is paying four times higher rate for the gas which is imported while the industries in other provinces are using local gas which is cheaper which has resulted in issues like increased cost of doing business for the Punjab-based industrial sector, said Patron Islamabad Chamber of Small Traders Shahid Rasheed Butt in a statement on Tuesday.
Khaled bin Abdulaziz Al-Faleh, Minister of Energy, Industry and Mineral Resources, stressed the importance of the role played by the national industry in supporting and achieving the initiatives and objectives of the Kingdom Vision 2030, the National Transformational Program 2020 in addition to enhancing participation of the private sector, especially the industrial sector, in achieving the goals of this vision which seeks to restructure the national economy and diversify sources of income.
The UAE's industrial sector saw investments with Dh130 billion during the first half of 2017, 2 per cent up on 2016 levels, a minister said on Wednesday.
By: MENA Trade and Industry Minster Tarek Kabil said Wednesday that developing the industrial sector was a top priority for the government currently, as an effective instrument for sustainable and comprehensive growth.
The First Vice-President , who addressing the celebration, affirmed the state commitment to develop the industrial sector, as industry is gear of economy, disclosing that Sudan will join the World Trade Organization(WTO) soon and that requires early readiness from the industrial sector to cope with the international standards .

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