- published: 31 Dec 2015
- views: 165625
In graph theory, a flow network (also known as a transportation network) is a directed graph where each edge has a capacity and each edge receives a flow. The amount of flow on an edge cannot exceed the capacity of the edge. Often in Operations Research, a directed graph is called a network, the vertices are called nodes and the edges are called arcs. A flow must satisfy the restriction that the amount of flow into a node equals the amount of flow out of it, except when it is a source, which has more outgoing flow, or sink, which has more incoming flow. A network can be used to model traffic in a road system, fluids in pipes, currents in an electrical circuit, or anything similar in which something travels through a network of nodes.
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Patrick Chukwuemeka Okogwu (born 7 November 1988), better known by his stage name Tinie Tempah, is an English rapper. He made his first mixtape in 2007; his first album, Disc-Overy, debuted at number one in October 2010 and was preceded by two number-one singles.
Patrick Chukwuemeka Okogwu, was born in London, England on 7 November 1988, and is of Ibusa, Delta State, Nigerian origin. He lived on the Aylesbury Estate in South East London until he was 12 with his parents and three younger siblings. He attended St. Paul's Catholic School in Abbey Wood, London SE2, (now known as St. Paul's Academy). He went on to study A Levels at St Francis Xavier Sixth Form College, SW12. Of his London upbringing, Tempah states: “London is one of the only places in the world where you can live in a council block and see a beautiful semi-detached house across the street. Growing up around that was inspirational, it kept me motivated".
In 2006, Tempah gained a great deal of airplay on British music TV channel, Channel AKA, for his song "Tears" He made his first mixtape in 2007 with 28 songs, freestyles and remixes, featuring Mz Bratt, Chipmunk and G-Unit.[citation needed] His first album, Disc-Overy, debuted at number one in October 2010 and was preceded by the number-one singles "Pass Out" and "Written in the Stars" and the UK Top 5 hits "Frisky" and "Miami 2 Ibiza". In late 2007, he collaborated on a track ("Perfect GCD Hood Economics Room 147") with grime artist Ultra and producers/songwriters Agent X.
Seongha Jeong (정성하) (colloquially: Sungha Jung) (born 2 September 1996) is a South Korean professional acoustic finger-style guitarist who has risen to fame on YouTube and other sites. As of 2012, his channel had over 17 million views, with his videos getting a total of over 454 million views, and also over 726,000 subscribers.
Seongha typically takes three days to learn and practice a new piece, and video-record it for upload onto YouTube. His genre selection is rather broad, as he learns and plays many pieces that are playable on guitar, therefore consequently spread across numerous genres.
Seongha has won 13 awards on YouTube, including 6 "#1" awards. Also on YouTube, Seongha has 523 videos with over one million views. Seongha's video with the most views is the one which shows him playing the theme from "Pirates Of The Caribbean".
In 2010, he was featured on Narsha's solo album "Narsha" for the song "I'm in Love" Seongha has composed 18 pieces as of February 2011, two of which are featured in his debut album, "Perfect Blue". He released his second album, "Irony", on 21 September 2011.