All articles starting with S
44,216 articles
Simons Laufer Mathematical Sciences Institute
The Simons Laufer Mathematical Sciences Institute (SLMath), formerly the Mathematical Sciences Research Institute, is a nonprofit institute for collaborative mathematical research in Berkeley, California, opened in 1982.
Simons Observatory
The Simons Observatory is a cosmic microwave background observatory at 5,190 meters in Chile's Atacama Desert, combining one large and three small telescopes to test cosmic inflation.
Simony
Simony, whose practitioners are called Simoniacs, is the buying or selling of spiritual things such as sacraments or church offices, named for Simon Magus, who offered the apostles money in Acts 8.
Simoom
Simoom (Arabic: سموم, samūm, "poison wind"), also spelled simoon or samoom, is a hot, dry, dust-laden desert wind of the Sahara, the Levant, and Arabia, briefly reaching 54 °C.
Simorgh Playground
Simorgh Playground (شهربازی سیمرغ) is a theme park in Semnan, Iran, within the 80-hectare Simorgh Park at the city's western entrance, offering rides, karting, a pool, boat rides, and lodging suites, open evenings 18:00–23:00; distinct from Simorgh parks in Isfahan, Kish, and Mazandaran.
Simoting Corona
Simoting Corona is a 270 km wide corona, a quasi-circular volcano-tectonic feature, on Venus at 41.20°N, 21.50°E, IAU-approved in 2003 and named for the Naga ancestor figure.
SIMOX
SIMOX (Separation by IMplantation of OXygen) is a process for fabricating silicon-on-insulator wafers by implanting oxygen ions into silicon and annealing, developed in the 1970s for radiation-hardened and high-speed circuits.
Simp
Simp is internet slang for someone, usually a man, showing excessive devotion to a romantic interest without reciprocation. Clipped from "simpleton" (1903), it spread via hip-hop, the manosphere, and TikTok's 2019 Simp Nation trend.
Simple acyclic thioesters
Simple acyclic thioesters are open-chain organic compounds of the formula R–C(=O)–S–R′, distinct from thionoesters, more electrophilic than oxygen esters, and important as activated acyl carriers in metabolism.
Simple additive weighting
Simple additive weighting (SAW), also known as the weighted sum method, is a multi-criteria decision analysis method that ranks alternatives by scoring each against weighted criteria and summing the results.
SIMPLE algorithm
The SIMPLE algorithm (Semi-Implicit Method for Pressure-Linked Equations) is an iterative pressure-correction method for computing incompressible fluid flows, introduced by Patankar and Spalding in 1972 and still standard in CFD software.
Simple Binary Encoding
Simple Binary Encoding (SBE) is a binary message encoding standard published by the FIX Trading Community for high-performance trading, encoding and decoding messages in tens of nanoseconds.
Simple chronic bronchitis
Simple chronic bronchitis (ICD-11 CA20.10, ICD-10 J41.0) is chronic mucus hypersecretion with productive cough but no airflow obstruction; also called chronic catarrhal or smokers bronchitis.
Simple columnar epithelium
Simple columnar epithelium (Epithelium simplex columnare) is a single layer of tall cells with basal oval nuclei, ciliated in the female genital tract and nonciliated with microvilli in the gastrointestinal and biliary tracts, serving secretion and absorption.
Simple cryoglobulinemia
Simple cryoglobulinemia, also called type I or monoclonal cryoglobulinemia, is a serum disorder in which one monoclonal immunoglobulin (usually IgG or IgM) precipitates below 37°C, almost always linked to B-cell disorders like myeloma or Waldenström macroglobulinemia.
Simple DirectMedia Layer
Simple DirectMedia Layer (SDL) is a cross-platform C development library that gives applications low-level access to audio, input, and graphics hardware, used by emulators and games.
Simple distillation
Simple distillation is a laboratory separation technique that boils a liquid mixture once and condenses the vapor, best for components with boiling points far apart.
Simple English Wikipedia
Simple English Wikipedia, also known as Simple Wikipedia, is a Wikimedia wiki with separate, shorter articles written in simplified language for children and English learners.
Simple febrile seizures
Simple febrile seizures are brief (<15 min), generalized, non-recurrent seizures with fever in children 6-60 months, also called typical febrile convulsions. They affect 2-5% of children, need no EEG or imaging, and carry an excellent prognosis with about one-third recurrence risk.
Simple File Transfer Protocol
Simple File Transfer Protocol (SFTP) is a file transfer protocol for the ARPA-Internet, specified in RFC 913 by Mark K. Lottor of MIT and published in September 1984.
Simple Gifts
Simple Gifts ('Tis the Gift to Be Simple) is an 1848 Shaker dance song by Elder Joseph Brackett of Alfred, Maine, made famous by Aaron Copland's variations in Appalachian Spring (1944) and later used in Old American Songs, Lord of the Dance, and Air and Simple Gifts.
Simple group
A simple group is a nontrivial group whose only normal subgroups are the identity and itself, playing the role in group theory that primes play in arithmetic.
Simple harmonic motion
Simple harmonic motion is oscillatory motion in which the restoring force is proportional to displacement from equilibrium, as with a mass on a spring obeying Hooke's law.
Simple interest
Simple interest is interest computed only on the principal, with I = P·r·t and total A = P(1 + rt), so growth is linear, unlike compound interest where interest earns interest.
Simple interrupted stitch
The simple interrupted stitch is a basic surgical suturing technique in which each stitch is a single loop tied off individually, so one failed stitch leaves the others intact.
Simple Kapadia
Simple Kapadia (1958–2009) was a Hindi film actress and costume designer, younger sister of Dimple Kapadia, who won the National Film Award for Rudaali (1992).
Simple Knowledge Organization System
Simple Knowledge Organization System, or SKOS, is a W3C standard data model, expressed as an RDF vocabulary, for publishing thesauri, taxonomies, and classification schemes on the Web.
Simple linear regression
Simple linear regression, or simple regression, is a statistical method that models one response variable as a straight-line function of one explanatory variable, fitted by least squares.
Simple living
Simple living (voluntary simplicity): a voluntarily chosen, less consumption-focused lifestyle coined as a term by Richard Gregg in 1936 and popularized by Duane Elgin; linked to modestly higher well-being (g = .28) and a 23% smaller ecological footprint.
Simple machine
A simple machine is a device with few or no moving parts that changes the force needed to do work, such as a lever, pulley, or ramp.