Information about Cluster

In physics, the term clusters denotes small, multiatom particles. As a rule of thumb, any particle of somewhere between 3 and 3*10^7 atoms is considered a cluster. Two-atom particles are sometimes considered clusters as well.
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Star clusters are groups of stars which are gravitationally bound. Two distinct types of star cluster can be distinguished: globular clusters are tight groups of hundreds of thousands of very old stars, while open clusters generally contain less than a few hundred members, and are
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Galaxy groups and clusters are the largest gravitationally-bound objects. They form the densest part of the large scale structure of the Universe. In models for the gravitational formation of structure with cold dark matter, the smallest structures collapse first and eventually
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globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers.
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The Cluster mission is an European Space Agency (ESA) unmanned space mission mission to study the Earth's magnetosphere using four identical spacecraft flying in a tetrahedral formation.
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In chemistry, a cluster is an ensemble of bound atoms intermediate in size between a molecule and a bulk solid. Clusters exist of diverse stoichiometries and nuclearities. For example, carbon and boron atoms form fullerene and borane clusters, respectively.
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Cluster sampling is a sampling technique used when "natural" groupings are evident in a statistical population. It is often used in marketing research. In this technique, the total population is divided into these groups (or clusters) and a sample of the groups is selected.
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Clustering is the classification of objects into different groups, or more precisely, the partitioning of a data set into subsets (clusters), so that the data in each subset (ideally) share some common trait - often proximity according to some defined distance measure.
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Clustering is the classification of objects into different groups, or more precisely, the partitioning of a data set into subsets (clusters), so that the data in each subset (ideally) share some common trait - often proximity according to some defined distance measure.
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In linguistics, a consonant cluster is a group of consonants which have no intervening vowel. In English, for example, the groups /spl/ and /ts/
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On a bicycle, the cassette or the freewheel (previously also known as a block) is the set of rear sprockets that attaches to a hub on the rear wheel. The cassette is a later development of a cogset than the freewheel.
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Cluster Munitions or Cluster Bombs are air-dropped or ground-launched munitions that eject a number of smaller submunitions ("bomblets"). The most common types are intended to kill enemy personnel and destroy vehicles.
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Cancer cluster is a term used by epidemiologists, statisticians, and public health workers to define an occurrence of a greater-than-expected number of cancer cases within a group of people in a geographic area over a period of time.
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Cluster headache
Classification & external resources

The Cluster Headache by JD Fletcher
ICD-10 G 44.0
ICD-9 346.2

DiseasesDB 2850

eMedicine EMERG/229   NEURO/67
MeSH D003027 Cluster headaches
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In beekeeping, a winter cluster is a well-defined cluster of honey bees that forms inside a beehive when the air temperature dips below 54 to 57 °F (12 to 14 °C). Honey bees are but a few insects that survive the winter as a hive.
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A cluster refers to a grouping of health-related events that are related temporally and in proximity.^[1] Typically, when clusters are recognized, they are reported to public health departments in the local area.
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Outbreak is a classification used in epidemiology to describe a small, localized group of people or organisms infected with a disease. Such groups are often confined to a village or a small area.
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A computer cluster is a group of tightly coupled computers that work together closely so that in many respects they can be viewed as though they are a single computer. The components of a cluster are commonly, but not always, connected to each other through fast local area
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cluster is the unit of disk space allocation for files and directories. In order to reduce the overhead of managing on-disk data structures, the filesystem does not allocate individual disk sectors, but contiguous groups of sectors, called clusters.
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A business cluster is a geographic concentration of interconnected businesses, suppliers, and associated institutions in a particular field. Clusters are considered to increase the productivity with which companies can compete, nationally and globally.
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Cluster is a series of science fiction novels by Piers Anthony. Anthony originally conceived of and wrote the series as a trilogy but later added two additional volumes.
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Piers Anthony
Born: July 6 1934 (1934--) (age 73)
Oxford, England
Occupation: novelist, short story writer
Nationality: USA
Writing period: 1967 - Present
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tone cluster is a musical chord comprising consecutive tones in a scale. Prototypical tone clusters are based on the chromatic scale, and are separated by semitones. For instance, three adjacent piano keys (like C, C♯, and D) struck simultaneously produce a tone cluster.
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Cluster is a German experimental musical group who influenced the development of contemporary popular electronic and ambient music. They have recorded albums in a wide variety of styles ranging from experimental music to progressive rock, all of which had an avant-garde edge.
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Cluster is the eponymous first full-length album by German electronic music outfit Cluster. It is also the only album on which Conrad Plank is credited as a member.

Cluster was recorded at Star-Studio in Hamburg, Germany in January, 1971.
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