Moment (mathematics)

In mathematics, a moment is a specific quantitative measure, used in both mechanics and statistics, of the shape of a set of points. If the points represent mass, then the zeroth moment is the total mass, the first moment divided by the total mass is the center of mass, and the second moment is the rotational inertia. If the points represent probability density, then the zeroth moment is the total probability (i.e. one), the first moment is the mean, the second central moment is the variance, the third moment is the skewness, and the fourth moment (with normalization and shift) is the kurtosis. The mathematical concept is closely related to the concept of moment in physics.

For a bounded distribution of mass or probability, the collection of all the moments (of all orders, from 0 to ∞) uniquely determines the distribution.

Significance of the moments

The n-th moment of a real-valued continuous function f(x) of a real variable about a value c is

It is possible to define moments for random variables in a more general fashion than moments for real values—see moments in metric spaces. The moment of a function, without further explanation, usually refers to the above expression with c = 0.

Moment (film)

Moment (Serbian: Трен, translit. Tren) is a 1978 Yugoslav war film directed by Stole Janković. It was entered into the 11th Moscow International Film Festival where Bata Živojinović won the award for Best Actor.

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Conviction (Aiden album)

Conviction is Aiden's third studio album which was released August 21, 2007. It is the first of their releases to carry a Parental Advisory sticker although it is not the first to contain profanity. Best Buy editions of the album contain the 2 exclusive bonus tracks "Here Lies the Waste" and "So Far Away". The album has been one of the band's most commercially successful albums to date. The first single from the album, "One Love", was released on their MySpace page on July 23, 2007.

Conviction is the last Aiden album to feature guitarist Jake Wambold, who was fired from the band in 2008. The band finished recording after their brief UK arena tour supporting Lostprophets and returned to the UK again to play the Download Festival before doing a more complete tour in support of the album.

Style

The album has marked a completely different musical direction for the band, departing from the punk rock sound from their first two albums for a lighter sound.

Speaking to Kerrang! in 2009, Francis explained:

USA (disambiguation)

USA or U.S.A. usually refers to the United States of America, a country in North America.

USA or U.S.A. may also refer to:

Places

Business

Universities

Other uses

American Revolution

The American Revolution was a political upheaval that took place between 1765 and 1783 during which colonists in the Thirteen American Colonies rejected the British monarchy and aristocracy, overthrew the authority of Great Britain, and founded the United States of America.

Starting in 1765, members of American colonial society rejected the authority of the British Parliament to tax them without colonial representatives in the government. During the following decade, protests by colonists—known as Patriots—continued to escalate, as in the Boston Tea Party in 1773 during which patriots destroyed a consignment of taxed tea from the Parliament-controlled and favored East India Company. The British responded by imposing punitive laws—the Coercive Acts—on Massachusetts in 1774, following which Patriots in the other colonies rallied behind Massachusetts. In late 1774 the Patriots set up their own alternative government to better coordinate their resistance efforts against Great Britain, while other colonists, known as Loyalists, preferred to remain aligned to the British Crown.

USA-229

USA-229, known before launch as NRO Launch 34 (NROL-34), is a pair of American signals intelligence satellites which were launched in 2011. They are operated by the United States National Reconnaissance Office.

Both satellites were deployed by a United Launch Alliance Atlas V 411 carrier rocket, which launched from Space Launch Complex 3E at the Vandenberg Air Force Base. The launch occurred at 04:24 UTC on 15 April 2011. The rocket placed the satellites into a low Earth orbit. By 04:29 UTC, official updates on the status of the spacecraft had been discontinued.

Whilst details of the satellites and their missions are officially classified, amateur observers have identified that the Atlas V deployed two satellites, one of which has officially been catalogued as debris. The two spacecraft have been identified as being a pair of third or fourth generation Naval Ocean Surveillance System satellites. Amateur observations have located the spacecraft in an orbit with a perigee of 1,025 kilometres (637 mi) and an apogee of 1,207 kilometres (750 mi), inclined at 64.4 degrees to the plane of the equator. Current generation NOSS satellites are always launched and operated in pairs, and are used to locate and track ships from the radio transmissions that they emit.