All articles starting with R
22,461 articles
Real-time kinematic positioning
Real-time kinematic positioning (RTK) is a satellite-navigation surveying technique in which a base station sends corrections to a moving receiver, giving centimeter accuracy in real time.
Real-Time Messaging Protocol
The Real-Time Messaging Protocol (RTMP) is an application-level protocol created by Macromedia and later owned by Adobe for carrying audio, video, and data over TCP, still the standard ingest protocol for live streaming platforms.
Real-time MRI
Real-time MRI is magnetic resonance imaging fast enough to capture moving structures, such as the beating heart or vocal tract during speech, as a continuous movie without breath-holding or ECG gating.
Real-time operating system
A real-time operating system (RTOS) is an operating system designed so that both results and their timing are deterministic, providing preemptive scheduling, bounded interrupt latency, and high-resolution timers.
Real-time optimization
Real-time optimization (RTO) is a model-based method that repeatedly re-solves a plant's steady-state economic optimization using current measurements, sending optimal setpoints to lower control layers.
Real-time polymerase chain reaction
Real-time PCR (qPCR): DNA amplification with fluorescence measured each cycle; Cq values, standard curves, 90–105% efficiency, SYBR Green vs TaqMan vs beacons, MIQE reporting, and ddPCR comparison.
Real-time quantum error correction feedback
Real-time quantum error correction feedback is the closed-loop process where a quantum processor measures error syndromes, a decoder interprets them in real time, and corrections are applied.
Real-time simulation
Real-time simulation is a computational method that produces one second of simulated results in one second of wall-clock time, used to train operators, test controllers, and validate digital twins.
Real-time strategy
Real-time strategy (RTS) games, also called estrategia en tiempo real, are continuous-time strategy video games defined by Dune II (1992), which coined the name; Warcraft, Command & Conquer, Age of Empires, and StarCraft defined the 1990s boom and esports.
Real-Time Streaming Protocol
The Real-Time Streaming Protocol (RTSP) is an application-layer protocol that controls streaming audio and video, letting clients play, pause, and stop media while delivery flows separately over RTP.
Real-time Transport Protocol
The Real-time Transport Protocol (RTP) is an Internet transport protocol for real-time data such as interactive audio and video, defined by the IETF in RFC 3550 in 2003.
Real2Sim
Real2Sim, or real-to-sim, is the process of building a simulation model from real-world data so robots can train and be evaluated in a simulated copy of an actual environment.
Realbotix
Realbotix is a Las Vegas-based company that builds AI-powered humanoid robots for social interaction in settings such as reception desks, classrooms, and care homes; its best-known robot is Aria.
RealClearPolitics
RealClearPolitics (RCP), founded 2000 by John McIntyre and Tom Bevan, is a US political news and polling aggregator known for the RCP Poll Average, a simple unweighted average of polls; Stagwell holds 35% since 2025.
RealDoll
RealDoll is an American brand of lifelike sex dolls made of silicone over articulated skeletons, produced by Abyss Creations in California since the late 1990s.
Realencyclopädie der classischen Altertumswissenschaft
Paulys Realencyclopädie der classischen Altertumswissenschaft, abbreviated RE and called Pauly-Wissowa, is a German encyclopedia of classical antiquity edited by Georg Wissowa from 1890 and completed in 1980.
RealFlight
RealFlight is a radio-controlled flight simulator for personal computers, first released in 1997 by Knife Edge Software and sold to Horizon Hobby in 2021, with RealFlight Evolution launched in 2022.
Realgar
Realgar is a red to orange-red arsenic sulfide mineral and a principal ore of arsenic, occurring in low-temperature hydrothermal veins and historically used as a pigment.
Realidade
Realidade was a Brazilian monthly news magazine published in São Paulo by Editora Abril from 1966 to 1976, known for literary reportage under the military dictatorship.
Realism
Realism in philosophy is the family of views holding that some domain of entities, facts, or truths exists independently of our minds, concepts, or ways of thinking, opposed by anti-realism.
Realism (art movement)
Realism is a French art movement that flourished from 1840 to the late nineteenth century. Led by Gustave Courbet, it aimed to portray contemporary life and social equality.
Realism (arts)
Realism in the arts is the attempt to represent subject matter truthfully, and, as a named movement, the mid-nineteenth-century French school led by Gustave Courbet that rejected idealized subjects.
Realism (international relations)
Realism (political realism) is an IR theory family holding that states, in an anarchic system, pursue security and national interest through power and balance of power; branches include classical realism (Carr, Morgenthau) and neorealism (Waltz), contrasted with liberalism and constructivism.
Realism (theatre)
Realism (theatre), also realist theatre or theatrical realism: the 19th-century movement portraying real life on stage, founded in France by Dumas fils and Augier, theorized by Zola, Shaw, and Strindberg, staged via box sets and the fourth wall, and spread by Ibsen, Chekhov, and Stanislavski.
Realism in Arabic literature
Realism in Arabic literature is the modern Arabic prose, poetry, and drama depicting social reality, appearing after World War II with figures like Naguib Mahfouz and Yusuf Idris.
Realism in Brazil
Realism in Brazil (Realismo brasileiro) was a late nineteenth-century literary movement, conventionally dated from 1881, led by Machado de Assis in reaction against Romantic subjectivism and idealization.
Realism in Chinese literature
Realism in Chinese literature (现实主义文学) is the dominant creative method of modern Chinese writing, introduced from Europe around 1915 and marked by strong romantic coloring and political character.
Realismo social argentino
Realismo social argentino is an Argentine literary current of the 1920s, centered on the Boedo group, that depicted workers and the poor to expose social injustice.
Realist evaluation
Realist evaluation is a theory-driven evaluation method in social science, set out by Pawson and Tilley in 1997, that explains what works for whom, in what circumstances, and how.
Realist synthesis
Realist synthesis is a theory-driven method of evidence synthesis, described by Ray Pawson in 2002, that explains how and why complex health and social interventions work, for whom, and under what circumstances.