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Resolution (logic)
Resolution, also known as the resolution principle, is a single rule of inference for proving formulas in conjunctive normal form unsatisfiable, developed by J. A. Robinson in 1965.
Resolution-class submarine
The Resolution class was a class of four nuclear-powered ballistic missile submarines built for the Royal Navy, carrying 16 Polaris missiles each from 1968 until the mid-1990s.
Resolv.conf
Resolv.conf is a Unix-like system's plain-text resolver configuration file at /etc/resolv.conf, telling the C library which DNS name servers to query and how to qualify hostnames.
Resolved-acceleration control
Resolved-acceleration control is a task-space tracking control technique for robot manipulators, introduced by J. Y. S. Luh, M. W. Walker, and R. P. Paul in 1980.
Resolver (electrical)
A resolver is an electromagnetic rotary position sensor, resembling a small AC motor, that reports the absolute angle of its shaft from sine and cosine signals.
Resonac
Resonac (レゾナック) is a Japanese chemical group formed on January 1, 2023, when Showa Denko and Showa Denko Materials, the former Hitachi Chemical, merged and reorganized into a holding company and a manufacturing company.
Resonance escape probability
Resonance escape probability is the probability that a fission neutron slows down through a fuel's resonance energy region without being captured, denoted p in reactor physics.
Resonant converter
A resonant converter is a switching power converter in which a resonant tank of inductors and capacitors shapes current so switches turn on at zero voltage or current, raising efficiency.
Resonant current control
Resonant current control is a feedback technique for power converters whose controller contains a resonant element tuned to a chosen frequency, giving very high gain there.
Resonant orbit
A resonant orbit is a spacecraft orbit whose period is commensurate with a repeating cycle, usually Earth's rotation, so it passes over the same ground points on schedule.
Resonant transformer
A resonant transformer is a high-voltage test transformer operated in a resonant circuit, producing large test voltages from a small power source for testing cables and switchgear.
Resonant-cavity light-emitting diode
A resonant-cavity light-emitting diode (RCLED), also called a micro-cavity LED, is an LED whose active region sits inside an optical cavity, demonstrated in 1992 at Bell Laboratories.
Resource acquisition is initialization
Resource acquisition is initialization, also known as scope-bound resource management, is a C++ technique where an object's constructor acquires a resource and its destructor releases it automatically.
Resource Description Framework
Resource Description Framework (RDF) is a W3C standard data model that represents information as subject–predicate–object triples in directed graphs, underpinning the Semantic Web and Linked Data and queried with SPARQL.
Resource Public Key Infrastructure
The Resource Public Key Infrastructure (RPKI) is a public key infrastructure that cryptographically attests to which entities hold which IP address blocks and Autonomous System numbers, securing BGP routing.
Resource Reservation Protocol
The Resource Reservation Protocol (RSVP) is an Internet control protocol, specified in RFC 2205 in 1997, that reserves network resources to provide quality of service.
Resource spread multiple access
Resource spread multiple access (RSMA) is a non-orthogonal multiple access scheme for wireless uplinks in which each user's signal is spread over all time and frequency resources.
Resource-constrained project scheduling
Resource-constrained project scheduling (RCPSP) is the NP-hard operations research problem of scheduling project activities under precedence relations and resource limits to minimize the makespan, first formulated in 1967.
Resourcesat
Resourcesat is a series of Indian Earth observation satellites operated by ISRO for land-resource remote sensing, launched between 2003 and 2016 and carrying three cameras that combine wide coverage with fine detail.
ReSpeaker
ReSpeaker is an open-source modular voice interface platform from Seeed Studio that adds far-field voice capture and on-board audio processing, first launched on Kickstarter in 2016.
Response amplitude operator
A response amplitude operator (RAO) is a frequency-dependent transfer function giving the motion or load response of a ship or floating structure to a wave of unit amplitude, as a function of wave frequency.
Response history analysis
Response history analysis (RHA), also called time-history analysis, computes the time-dependent seismic response of a structure by numerically integrating its equations of motion under an earthquake ground-motion record.
Response modification factor
The response modification factor (R) is a seismic engineering coefficient that reduces elastic design forces for a structure's ductility, overstrength, and redundancy, first codified in the ATC-3-06 report of 1978.
Response spectrum
A response spectrum is a plot of the maximum acceleration, velocity, or displacement of damped oscillators excited by an earthquake, and underlies every modern seismic design code.
Response spectrum analysis
Response spectrum analysis, also called the response spectrum method, is a structural dynamics method that estimates a structure's peak seismic response by combining modal responses from an earthquake response spectrum.
Response time analysis
Response time analysis (RTA) is a schedulability analysis method for real-time systems that computes each task's worst-case response time, introduced by Joseph and Pandya in 1986.
Responsible Business Alliance
The Responsible Business Alliance (RBA), formerly the Electronic Industry Citizenship Coalition (EICC), is a nonprofit industry coalition promoting responsible conduct in global supply chains, best known for its Code of Conduct and third-party audit programs.
Responsible Care
Responsible Care is a voluntary initiative of the global chemical industry, launched in Canada in 1985 after the Bhopal disaster, in which companies commit to continuous improvement in chemical safety, health, and environmental performance.
ResponsibleSteel
ResponsibleSteel is a global not-for-profit multi-stakeholder organization founded in 2016 that sets a certification standard for responsible steel production, covering climate change, labor and human rights, and environmental stewardship.
Responsive web design
Responsive web design (RWD) is an approach to building websites in which one set of HTML and CSS adapts its layout to any device, a term coined by Ethan Marcotte in 2010.