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.

Riot

A riot (/ˈraɪət/) is a form of civil disorder commonly characterized by a group lashing out in a violent public disturbance against authority, property or people. Riots typically involve vandalism and the destruction of property, public or private. The property targeted varies depending on the riot and the inclinations of those involved. Targets can include shops, cars, restaurants, state-owned institutions, and religious buildings.

Riots often occur in reaction to a perceived grievance or out of dissent. Historically, riots have occurred due to poor working or living conditions, governmental oppression, taxation or conscription, conflicts between ethnic groups, (race riot) or religions (sectarian violence, pogrom), the outcome of a sporting event (football hooliganism) or frustration with legal channels through which to air grievances.

While individuals may attempt to lead or control a riot, riots typically consist of disorganized groups that are frequently "chaotic and exhibit herd behavior." However, there is a growing body of evidence to suggest that riots are not irrational, herd-like behavior, but actually follow inverted social norms.

Riot (disambiguation)

A riot is a form of civil disorder.

Riot may also refer to:

Film and television

Music

Ola (album)

Ola is the third album released by Swedish pop singer Ola.

The self-titled album Ola was released in Sweden in September 2010, and debuted at #3 in the official Swedish album chart. It is the first release on Ola's own label Oliniho Records, after buying himself out of his deal with Universal Music. It spawned three hit singles, "Unstoppable", "Overdrive" and "All Over The World", which was Ola's first international single release. The similarity between "All Over The World" and "Somebody To Love" by Justin Bieber is often noted, but believed to be coincidence, as the two were released at the same time.

The album also contained a track, "Let It Hit You", composed by Ola with regular collaborator Alexander Kronlund and British artist Labrinth.

Track listing