All articles starting with R
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RL circuit
An RL circuit, also called an RL network, is an electrical circuit made of a resistor and an inductor, with a single time constant, τ = L/R.
RL10
The RL10 is an American liquid-hydrogen and liquid-oxygen upper-stage rocket engine developed by Pratt & Whitney, first flown in 1963 and still in production today.
RL95-2
RL95-2 (CVCL_0505, ATCC CRL-1671) is a human endometrial adenosquamous carcinoma cell line from a 65-year-old woman, MSI-high, ER-positive, used in cancer research and as a receptive-endometrium adhesion model.
RLBench
RLBench is a large-scale benchmark and learning environment for vision-guided robotic manipulation, featuring 100 hand-designed robot arm tasks and released by Imperial College London's Dyson Robotics Lab in 2019.
RLC circuit
An RLC circuit, also called an RLC network, is an electrical circuit of a resistor, inductor, and capacitor that stores and dissipates energy like a damped oscillator.
RLHF
RLHF, reinforcement learning from human feedback, is a post-training method that fine-tunes a language model with PPO against a reward model learned from human preference comparisons.
RLHF for ChatGPT
RLHF for ChatGPT is the reinforcement learning from human feedback process OpenAI used before ChatGPT's 2022 launch to turn a GPT-3.5 model into an instruction-following assistant, using the method validated on InstructGPT.
RLlib
RLlib is an open-source reinforcement learning library built on Ray, created at UC Berkeley and published at ICML 2018, with scalable algorithms like PPO and IMPALA.
RLN2
RLN2 (relaxin 2, H2 relaxin, RLX2) is the human chromosome 9p24 gene encoding circulating relaxin-2, a corpus luteum insulin-like peptide hormone acting via RXFP1; its recombinant form serelaxin was trialed in acute heart failure.
Rlogin
Rlogin, short for remote login, is a TCP-based Unix protocol introduced in 4.2BSD in 1983 that provides terminal sessions on remote hosts, admitting trusted users without a password.
RM (김남준) (musician)
RM (김남준, Kim Nam-joon, born 1994) is the South Korean rapper, songwriter, and leader of BTS, formerly Rap Monster. Solo releases: RM (2015), mono. (2018), Indigo (2022), Right Place, Wrong Person (2024); discharged from military service June 2025.
RM plc
RM plc is a United Kingdom education technology company founded in Oxford in 1973 that supplies assessment software, IT services, and educational resources to schools and examination bodies.
RM-81 Agena
The RM-81 Agena, also known as the Lockheed Agena, was an American upper-stage rocket and satellite bus built by Lockheed, flown with Thor, Atlas, and Titan boosters from 1959 to 1987.
RM734
RM734 is an organic rodlike liquid crystal compound that was the first material proven to exhibit a ferroelectric nematic phase, characterized by spontaneous, reorientable electric polarization of a fluid.
RMG-I
RMG-I (RMG1, RMG-1; CVCL_1662) is a human ovarian clear cell adenocarcinoma cell line established in 1988 from ascites of a 34-year-old Japanese woman; aneuploid, CDKN2A-deleted, listed by ICLAC as contaminated by RMG-II.
RMI (think tank)
RMI, founded in 1982 as Rocky Mountain Institute by Amory and Hunter Lovins, is a nonprofit think tank that speeds the shift from fossil fuels to efficiency and renewables.
RMM Records
RMM Records was a New York record label founded by promoter Ralph Mercado in 1987, specializing in salsa with a roster including Celia Cruz, Tito Puente, and Marc Anthony.
RMS
RMS, or root mean square, also called the quadratic mean, averages numbers by squaring them, taking the mean, and taking the square root, so sign is ignored.
RMS Aquitania
RMS Aquitania, known as "The Ship Beautiful," was a British ocean liner of the Cunard Line, launched in 1913. It was the largest in the fleet and served for 36 years.
RMS Caronia
RMS Caronia is the name of two Cunard passenger ships built by John Brown at Clydebank: a 1905 steamship and a 1948 cruise liner known as the "Green Goddess".
RMS Carpathia
RMS Carpathia was a British Cunard Line steamship, launched in 1902, that rescued Titanic survivors in 1912 and was sunk by a German submarine in 1918.
RMS Empress of Britain
RMS Empress of Britain was a 42,000-ton Canadian Pacific ocean liner, the largest Allied liner sunk in the Second World War, lost off Ireland in 1940.
RMS Empress of Ireland
RMS Empress of Ireland was a British ocean liner that sank in the St. Lawrence River on 29 May 1914 after colliding with the Norwegian steamer Storstad, killing 1,012 people.
RMS Empress of Japan (1929)
RMS Empress of Japan, launched in 1929, was a Canadian Pacific ocean liner serving the trans-Pacific route out of Vancouver, later renamed Empress of Scotland in 1942.
RMS Lancastria
RMS Lancastria was a British Cunard ocean liner sunk by German bombers off Saint-Nazaire, France, on 17 June 1940, with the largest loss of life in British maritime history.
RMS Lusitania
RMS Lusitania was a British Cunard Line ocean liner launched in 1906, torpedoed by a German submarine off Ireland in 1915 with the loss of 1,195 lives.
RMS Majestic (1914)
RMS Majestic, also known as SS Bismarck, was a British White Star Line ocean liner completed as a war reparation and the world's largest ship until 1935.
RMS Mauretania (1906)
RMS Mauretania was a British Cunard ocean liner launched in 1906 that held the Blue Riband as the fastest Atlantic liner from 1907 to 1929.
RMS Oceanic
RMS Oceanic was a British transatlantic passenger liner of the White Star Line, launched in Belfast in 1899 and wrecked off Foula, Shetland, in September 1914.
RMS Olympic
RMS Olympic was a British White Star Line ocean liner, lead ship of the Olympic class with the Titanic and Britannic, in service from 1911 to 1935.