June 22, 2008 at 2:04 pm (Internet)
Tags: internet map
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June 22, 2008 at 1:37 pm (Cable, Fixed-line)
Tags: submarine cable, Telecommunication
http://www.ripe.net/projects/reports/2008cable-cut/index.html
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Mediterranean Fibre Cable Cut – a RIPE NCC Analysis
Analysis by the RIPE NCC Science Group with contributions from Roma Tre University.
Editors: Rene Wilhelm, Chris Buckridge
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The history of submarine telecommunications cables goes back to 1850 when the first international telegraph link between England and France was established. Eight years later the first trans-Atlantic telegraph cable linked Europe to North America.
In the 20th century telephony became the driving force for submarine cable deployments. TAT-1, the first trans-Atlantic telephone cable, was installed in 1956; it had the capacity to transmit 36 analog phone channels simultaneously. These days fibre-optic submarine cables carry the bulk of the trans-oceanic voice and data traffic. Maximum capacity is now in the order of 1 Tb/s, equivalent to 15 million old analog phone calls. Compared to satellites, submarine cables offer higher capacity and, because of the shorter distance, feature much better latencies.
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http://gcaptain.com/maritime/blog/tag/undersea-cable/
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June 21, 2008 at 10:37 am (Internet)
Tags: Internet, network
http://www.technologyreview.com/Infotech/18944/?a=f
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By Duncan Graham-Rowe
Tuesday, June 19, 2007
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Routing traffic through peer-to-peer networks could stave off Internet congestion, according to a new study.
Tangled web: The image above shows the hierarchical structure of the Internet, based on the connections between individual nodes (such as service providers). Three distinct regions are apparent: an inner core of highly connected nodes, an outer periphery of isolated networks, and a mantle-like mass of peer-connected nodes. The bigger the node, the more connections it has. Those nodes that are closest to the center are connected to more well-connected nodes than are those on the periphery.
Credit: Lanet-vi program of I. Alvarez-Hamelin et al.
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June 21, 2008 at 6:13 am (Electric Car, Technology)
Tags: electric car, Technology
http://www.businessweek.com/innovate/content/jun2008/id20080616_955452.htm?chan=rss_topStories_ssi_5
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by Matt Vella
June 16, 2008, 12:32PM EST
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The Electric Car Lives
Backed by U.S. venture capital, Norwegian company Think is betting its Ox concept vehicle can prove the electric car’s time has finally arrived
Clean, quiet, and relatively profitable to produce, electric vehicles have had a rough start in the U.S.: Five years after General Motors (GM) nixed its innovative EV1 electric car program, just a handful of automakers have committed to making and selling electric vehicles on a mass scale any time soon.
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