Circle

A circle is a simple shape in Euclidean geometry. It is the set of all points in a plane that are at a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves so that its distance from a given point is constant. The distance between any of the points and the centre is called the radius.

A circle is a simple closed curve which divides the plane into two regions: an interior and an exterior. In everyday use, the term "circle" may be used interchangeably to refer to either the boundary of the figure, or to the whole figure including its interior; in strict technical usage, the circle is only the boundary and the whole figure is called a disk.

A circle may also be defined as a special ellipse in which the two foci are coincident and the eccentricity is 0, or the two-dimensional shape enclosing the most area per unit perimeter squared, using calculus of variations.

Terminology

Circles (film distributor)

Circles was a feminist film and video distribution network in the UK, which was set up out of a desire to distribute and screen women's films on their own terms. It was founded in 1979 by feminist filmmakers Lis Rhodes, Jo Davis, Felicity Sparrow and Annabel Nicolson, publishing a 1980 catalogue including about 30 films, and it closed in 1991, largely due to funding issues that also prompted the merger of Circles and Cinema of Women, which led to the formation of Cinenova. A previous funding crisis in 1987, when funding by Tower Hamlets council had been withdrawn, had been resolved with replacement funding from the British Film Institute.

Origins

According to Jenny Holland and Jane Harris, "Circles started in 1979, partly as a response to an Arts Council of Great Britain exhibition on experimental film. Feeling that their work on women's involvement in this field was being marginalised, the women on the exhibition committee withdrew their painstakingly researched work and issued an explanatory statement. In many ways, this research was the cornerstone of Circles, which went on to distribute the films by Alice Guy, Germaine Dulac, Maya Deren, and Lois Weber which were to have been discussed in the exhibition." The statement, "Women and the Formal Film," was published in the "Film as Film" exhibition catalogue and acted as a manifesto for the distribution collective that emerged.

The Party Scene

The Party Scene is the debut full-length studio album by American pop punk band All Time Low, released on July 19, 2005 via regional imprint Emerald Moon Records. Music videos were released for "Circles" and "The Girl's a Straight-Up Hustler". Tracks 2, 3, 8, 9 and 12 were re-recorded for the band's next EP, Put Up or Shut Up.

Track listing

All music and arrangements by All Time Low; except where noted. All lyrics by Alex Gaskarth. Additional arrangements by Paul Leavitt.

Personnel

Personnel per booklet.

References

Mira

Mira (/ˈmaɪrə/, also known as Omicron Ceti, ο Ceti, ο Cet) is a red giant star estimated 200–400 light years away in the constellation Cetus. Mira is a binary star, consisting of the red giant Mira A along with Mira B. Mira A is also an oscillating variable star and was the first non-supernova variable star discovered, with the possible exception of Algol. Mira is the brightest periodic variable in the sky that is not visible to the naked eye for part of its cycle. Its distance is uncertain; pre-Hipparcos estimates centered on 220 light-years; while Hipparcos data from the 2007 reduction suggest a distance of 299 light-years, with a margin of error of 11%.

Observation history

Evidence that the variability of Mira was known in ancient China, Babylon or Greece is at best only circumstantial. What is certain is that the variability of Mira was recorded by the astronomer David Fabricius beginning on August 3, 1596. Observing what he thought was the planet Mercury (later identified as Jupiter), he needed a reference star for comparing positions and picked a previously unremarked third-magnitude star nearby. By August 21, however, it had increased in brightness by one magnitude, then by October had faded from view. Fabricius assumed it was a nova, but then saw it again on February 16, 1609.

Mira (film)

Mira is a 1971 Dutch-Belgian drama film directed by Fons Rademakers. It was entered into the 1971 Cannes Film Festival. The film was selected as the Dutch entry for the Best Foreign Language Film at the 44th Academy Awards, but was not accepted as a nominee.

Cast

See also

References

External links

IBM Mira

Mira is a petascale Blue Gene/Q supercomputer. As of June 2013, it is listed on TOP500 as the fifth-fastest supercomputer in the world. It has a performance of 8.59 petaflops (LINPACK) and consumes 3.9 MW. The supercomputer was constructed by IBM for Argonne National Laboratory's Argonne Leadership Computing Facility with the support of the United States Department of Energy, and partially funded by the National Science Foundation. Mira will be used for scientific research, including studies in the fields of material science, climatology, seismology, and computational chemistry. The supercomputer is being utilized initially for sixteen projects, selected by the Department of Energy.

The Argonne Leadership Computing Facility, which commissioned the supercomputer, was established by the America COMPETES Act, signed by President Bush in 2007, and President Obama in 2011. The United States' emphasis on supercomputing has been seen as a response to China's progress in the field. China's Tianhe-1A, located at the Tianjin National Supercomputer Center, was ranked the most powerful supercomputer in the world from October 2010 to June 2011. Mira is, along with IBM Sequoia and Blue Waters, one of three American petascale supercomputers deployed in 2012.