All articles starting with R
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Reliability block diagram
A reliability block diagram is a graphical model of system success as blocks in series or parallel, used to compute system reliability from component reliabilities.
Reliability engineering
Reliability engineering, also called systems reliability, is a branch of systems engineering that ensures products perform their intended functions without failure, using probability, statistics, and testing across the product lifecycle.
Reliability growth model
A reliability growth model is a mathematical model predicting how the reliability of a repairable system or software product improves as defects are found and fixed during testing.
Reliability of Wikipedia
The reliability of Wikipedia, also called the accuracy of Wikipedia, is how accurate its volunteer-edited content is, as measured by external audits like Nature's 2005 comparison with Britannica.
Reliability-centered maintenance
Reliability-centered maintenance (RCM) is a structured method for deciding which maintenance tasks an asset needs, developed in the airline industry in the 1960s and named in a 1978 report to the U.S. Department of Defense.
Reliability, availability, maintainability and safety
Reliability, availability, maintainability and safety (RAMS) is an engineering framework that treats the four characteristics together to demonstrate the dependability of technical systems, most prominently in railways through the EN 50126 standard.
Reliance BP Energy Limited
Reliance BP Energy Limited, legally Reliance BP Mobility Limited, is a joint venture of Reliance Industries and bp trading as Jio-bp, formed in 2019 to run fuel stations across India.
Reliance Capital
Reliance Capital Limited was an Indian non-banking financial company, part of Anil Ambani's group, that entered insolvency in 2021 with tens of thousands of crore of debt.
Reliance Communications
Reliance Communications, also called Reliance Infocomm or RCom, was an Indian telecom company controlled by Anil Ambani; launched in 2003, it collapsed under debt after Reliance Jio's 2016 entry.
Reliance Entertainment
Reliance Entertainment, also Reliance Entertainment Studios, is the flagship film production and distribution arm of India's Anil Ambani-led Reliance Group. Known for its Amblin partnership (Green Book, 1917), Rohit Shetty and Imtiaz Ali joint ventures, and 300+ film slate.
Reliance Group
Reliance Group, formally the Anil Dhirubhai Ambani Group, is an Indian conglomerate controlled by Anil Ambani, formed in the 2005 split of Dhirubhai Ambani's Reliance empire.
Reliance Industries
Reliance Industries Limited (RIL) is an Indian conglomerate founded by Dhirubhai Ambani in 1958, spanning petrochemicals, retail, and telecom through Jio, now led by Mukesh Ambani.
Reliance Infrastructure
Reliance Infrastructure, also known as Reliance Energy, is an Indian infrastructure company, incorporated in 1929, part of the Anil Dhirubhai Ambani Group, with power distribution in Delhi and Mumbai Metro Line 1.
Reliance Power
Reliance Power Limited is an Indian private-sector power company of the Anil Ambani-led Reliance Group, operating about 5,305 MW of coal, gas, solar, wind, and hydro projects.
Reliance Retail
Reliance Retail, also known as Reliance Retail Limited, is India's largest retailer. It began in 2006 with a Reliance Fresh store in Hyderabad and runs about 19,340 stores plus JioMart.
Reliance, Inc.
Reliance, Inc. is an American metals service center company headquartered in Phoenix, Arizona, and the largest in North America; founded in 1939, it had 2025 net sales of $14.29 billion.
Reliant Regal
The Reliant Regal was a British three-wheeled economy car built by Reliant of Tamworth from 1953 to 1973, ending with the glassfibre Regal 3/25 and 3/30 that preceded the Robin.
Reliant Robin
The Reliant Robin is a British three-wheeled economy car built by the Reliant Motor Company in Tamworth from 1973 to 2002, Britain's best-known three-wheeler, sellable on a motorcycle license.
ReliaQuest
ReliaQuest is an American cybersecurity technology company headquartered in Tampa, Florida, founded by Brian Murphy in 2007. Its GreyMatter platform unifies detection, investigation, and response across existing security tools.
Relic
A relic, or religious relic, is the material remains of a saint or an object that touched the saint's body; the True Cross is the most important.
Relic (2020 film)
Relic (2020) is an Australian psychological horror film and the feature debut of director Natalie Erika James, co-written with Christian White, starring Emily Mortimer, Robyn Nevin, and Bella Heathcote as three generations of women confronting a supernatural manifestation of dementia at a decaying family house.
Relic Entertainment
Relic Entertainment, Vancouver-based Canadian studio founded May 1997, maker of Homeworld, Dawn of War, Company of Heroes, and Age of Empires IV; owned by THQ then SEGA, independent under Emona Capital since 2024.
Relic Hunter
Relic Hunter is a syndicated action-adventure series (1999–2002, 66 episodes, creator Gil Grant) starring Tia Carrere as Professor Sydney Fox, who recovers artifacts worldwide with assistant Nigel Bailey, a Fireworks/Gaumont Canada-France co-production.
Relics associated with Jesus
Relics associated with Jesus are objects Christian tradition venerates as connected to him, chiefly the Shroud of Turin, the Crown of Thorns, and True Cross fragments.
Relief
Relief (art): sculpture with figures carved or molded projecting from a flat background; types include high relief (alto), low relief (bas), medium, and sunken relief, plus relief printing.
Relief of Douglas MacArthur
Removal of General Douglas MacArthur from his four Far East commands by President Truman on April 11, 1951, after clashes over limited-war strategy in Korea; Matthew B. Ridgway succeeded him.
Relief of Vienna (1683)
The Relief of Vienna (Odsiecz wiedeńska) of 12 September 1683 was the battle in which John III Sobieski's allied Christian army defeated the Ottomans besieging Vienna.
Relief Records
Relief Records is a Chicago-based house and techno record label founded in 1993 by Curtis Alan Jones, the producer known as Cajmere and Green Velvet.
Relief valve
A relief valve, also called a pressure relief valve, is an automatic device that opens at a set pressure to discharge excess fluid and protect against overpressure.
Relient K
Relient K is an American pop punk/Christian rock band from Canton, Ohio, formed by Matt Thiessen and Matt Hoopes; known for Mmhmm (2004), "Be My Escape," three gold albums, and Air for Free (2016).