Survey

Survey may refer to:

Quantitative research

Geography

Survey methodology

A field of applied statistics, survey methodology studies the sampling of individual units from a population and the associated survey data collection techniques, such as questionnaire construction and methods for improving the number and accuracy of responses to surveys.

Statistical surveys are undertaken with a view towards making statistical inferences about the population being studied, and this depends strongly on the survey questions used. Polls about public opinion, public health surveys, market research surveys, government surveys and censuses are all examples of quantitative research that use contemporary survey methodology to answer questions about a population. Although censuses do not include a "sample", they do include other aspects of survey methodology, like questionnaires, interviewers, and nonresponse follow-up techniques. Surveys provide important information for all kinds of public information and research fields, e.g., marketing research, psychology, health professionals and sociology.

Surveying

Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional position of points and the distances and angles between them. A land surveying professional is called a land surveyor. These points are usually on the surface of the Earth, and they are often used to establish land maps and boundaries for ownership, locations like building corners or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales.

Surveyors work with elements of geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages and the law. They use equipment like total stations, robotic total stations, GPS receivers, retroreflectors, 3D scanners, radios, handheld tablets, digital levels, drones, GIS and surveying software.

Surveying has been an element in the development of the human environment since the beginning of recorded history. The planning and execution of most forms of construction require it. It is also used in transport, communications, mapping, and the definition of legal boundaries for land ownership. It is an important tool for research in many other scientific disciplines.

Cable

An electrical cable is made of two or more wires running side by side and bonded, twisted, or braided together to form a single assembly, the ends of which can be connected to two devices, enabling the transfer of electrical signals from one device to the other. Cables are used for a wide range of purposes, and each must be tailored for that purpose. Cables are used extensively in electronic devices for power and signal circuits. Long-distance communication takes place over undersea cables. Power cables are used for bulk transmission of alternating and direct current power, especially using high-voltage cable. Electrical cables are extensively used in building wiring for lighting, power and control circuits permanently installed in buildings. Since all the circuit conductors required can be installed in a cable at one time, installation labor is saved compared to certain other wiring methods.

The term originally referred to a nautical line of specific length where multiple ropes, each laid clockwise, are then laid together anti-clockwise and shackled to produce a strong thick line, resistant to water absorption, that was used to anchor large ships. In mechanics, cables, otherwise known as wire ropes, are used for lifting, hauling, and towing or conveying force through tension. In electrical engineering cables are used to carry electric currents. An optical cable contains one or more optical fibers in a protective jacket that supports the fibers.

Cable length

A cable length or length of cable is a nautical unit of measure equal to one tenth of a nautical mile or approximately 100 fathoms. The unit is named after the length of a ship's anchor cable in the age of sail. The definition varies:

References

See also

Cable (British band)

Cable were a British indie rock band originally from Derby, UK who released 3 albums in the late '90s: Down-Lift the Up-Trodden ('96), When Animals Attack ('97), and Sub-Lingual ('99), on Infectious Records. The band split up in 1999.

Formed in 1992 by Matt Bagguley and Darius Hinks, Cable were initially inspired by the art-rock leanings of indie-labels such as Touch and Go, Dischord, Blast First, Southern Records and Shimmy Disc, and also UK artists such as Spacemen 3 & My Bloody Valentine. The first settled line-up was Matt Bagguley (vocals/guitar), Darius Hinks (guitar), Pete Darrington (bass), Neil Cooper (drums) and throughout 1993 the band played regularly with underground acts from the U.S (such as Medicine, Polvo, Truman's Water, Rocket From The Crypt..) In early '94 their debut single "Sale of the Century" was released on 7", by Derby-based indie-label Krunch! Records. Radio 1 DJ John Peel played it immediately on his show saying it was the best thing he'd heard that week and phoned the band during the show to invite them to record a session. John Peel remained a loyal fan from that moment on, and altogether the band recorded 4 Peel Sessions.