(plural ring topologies) (computing) A network topology in which, in the physical case, every node of a network is connected to exactly two other nodes: one node designated as upstream and the other as downstream. A given node receives data from its upstream node and sends data to its downstream node.
Image copyright. The price of Brent crude oil has fallen below $50 a barrel for the first time since May 2009. It fell more than a dollar to $49.92 a barrel in early trading on Wednesday before edging back above the $50 mark. Slowing global growth and increased supply of oil and gas have pushed prices sharply lower in recent weeks.
Prices of WTI per barrel during the period considered above were lower than those of the two other crude oils, with the price of OPEC basket oil reaching 104.45 U.S. dollars per barrel in July 2013, and the UK Brent crude oil price at 107.93 U.S. dollars per barrel in July 2013.his statistic depicts the price of West Texas Intermediate (WTI) crude oil from August 2014 to August 2015. WTI is also known as Texas light sweet and is a grade of crude oil, often used as a benchmark for oil pricing.