Source

Source may refer to:

Research

Source (International Information Support Centre)

Source is an international information support centre and digital library, providing links to academic resources and articles related to disability, health and international development.

About

Source provides access to a collection of more than 25,000 published and unpublished resources related to health, disability and international development. This includes books, journals, reports, posters, CD-ROMs, manuals, websites and organisations.

Source was set up as a collaborative venture of Healthlink Worldwide, a non-profit organisation, and the Centre for International Health and Development, an academic institution. Handicap International became a partner shortly after. The information support centre aims to increase access to health and disability related resources, produced for and by people with disabilities in developing countries, in order to promote research and learning among health professionals, students, disabled people’s organisations (DPOs) and NGOs working in international development world-wide.

Source (photography magazine)

Source is a quarterly photography magazine published in Belfast. It is distributed throughout the UK, Ireland and internationally. It is the longest running photographic review in the UK since the closing of Creative Camera magazine in 2001 and is comparable to other international photography titles such as Aperture in the US, Camera Austria and Katalog in Denmark.

History

Source was first published in 1992 as a newsletter of the organisation Photo Works North. This organisation had been set up the previous year to promote photography in Northern Ireland. The first editor was the photographer Paul Seawright.

From 1995 Source expanded its remit to include review coverage of exhibitions across Ireland and the UK. Since 2002 it has also included extensive reviews of photographic publishing. In 2007 Source published its 50th issue and was relaunched in a new format with additional columns and more review coverage.

Coverage

Source is primarily concerned with social, historical or aesthetic uses of photography rather than technical or amateur photography. The magazine deals largely with art photography, in exhibition or book reviews, essays or in the portfolios of photographs it publishes. These portfolios are selected from submissions, including those from photographers who have attended the regular portfolio days the magazine has run at venues around Ireland and the UK since 1997.

Energy (signal processing)

In signal processing, the energy of a continuous-time signal x(t) is defined as

the energy of a discrete-time signal x(t) is defined as

Relationship to energy in physics

Energy in this context is not, strictly speaking, the same as the conventional notion of energy in physics and the other sciences. The two concepts are, however, closely related, and it is possible to convert from one to the other:

For example, if x(t) represents the potential (in volts) of an electrical signal propagating across a transmission line, then Z would represent the characteristic impedance (in ohms) of the transmission line. The units of measure for the signal energy would appear as volt²·seconds, which is not dimensionally correct for energy in the sense of the physical sciences. After dividing by Z, however, the dimensions of E would become volt²·seconds per ohm, which is equivalent to joules, the SI unit for energy as defined in the physical sciences.

Spectral energy density

Energy (Keri Hilson song)

"Energy" is the debut single by American recording artist Keri Hilson. The song was written and produced by The Runaways, consisting of Louis Biancaniello, Sam Watters, Rico Love, and Wayne Wilkins, for her studio album In a Perfect World… (2009).

The track was released as the first single from the singer's debut in the United States on May 27, 2008. Although being released worldwide it initially only charted in New Zealand at number two and only managed to reach top thirty on the U.S. Billboard Hot R&B/Hip-Hop Songs and Hot Dance Club Play charts.

Generally well received by music critics, it was named sixty-first on The Top 144 Songs of 2008 listing by Blender magazine.

Background

"Energy" was written and produced by The Runaways. It was also recorded by The Runaways at Homesite 13 studios in Novato, California. and Hilson stated that she wanted to prove that she can be successful even without collaborations and guest vocalists and so it was announced "Energy" would be released as the next worldwide single following the success of "Knock You Down". The song was released on September 14, 2009 in the UK. On September 25, 2009 she appeared live on breakfast TV show GMTV in the UK where she performed the single. That same day, she appeared on BBC Radio 1's Live Lounge where she performed a stripped version of "Energy" as well as a gospel cover version of "Supernova" originally sung by Mr Hudson and Kanye West.

Seven Year Itch (Collective Soul album)

On September 18, 2001, Collective Soul released their greatest hits compilation Seven Year Itch: Greatest Hits, 1994-2001 (stylized as 7even Year Itch). The compilation includes songs recorded from 1994 to 2001 and included two new tracks; "Next Homecoming" and "Energy". Seven Year Itch received decent reviews and was relatively successful It sold 225,000 copies in the first year after its release and reached number fifty on the Billboard 200; in Canada, it reached number nine on its albums chart and went platinum. All the songs in Seven Year Itch had charted in the US on the Billboard Hot 100, Mainstream Rock Tracks, or the Modern Rock Tracks chart, except for "Energy", which debuted in this compilation.

The compilation has sold over 500,000 copies. It saw a resurgence in sales after Collective Soul began putting out albums on their own independent label, El Music Group, beginning in 2004.

Seven Year Itch was the last album Collective Soul released through Atlantic Records and their last album to feature guitarist Ross Childress, who had been with the band since its 1993/1994 debut.