All articles starting with S
44,216 articles
Service rifle
A service rifle is the standard firearm issued to a nation's regular infantry; in the United States, the 5.56mm M16 and its variants have been standard since the 1960s.
Service set (802.11 network)
A service set in IEEE 802.11 is a group of wireless stations forming one logical Wi-Fi network, identified by an SSID and organized as a BSS, IBSS, ESS, or mesh.
Service star
Service star, also called campaign or battle star: a 3/16-inch bronze or silver five-pointed device worn on US campaign and service medals to denote a named campaign or an additional award; silver replaces five bronze.
Service stripe
Service stripes, or hash marks, are diagonal enlisted sleeve insignia marking length of honorable service: three years per stripe in the U.S. Army, four in the Navy and Coast Guard, distinct from overseas service bars.
Service Worker
A service worker is an event-driven JavaScript script registered by a web page that intercepts network requests, serves cached content offline, and powers progressive web apps and push notifications.
Service-based architecture
Service-based architecture (SBA) is the design of the 5G core network in which network functions communicate over common HTTP-based service interfaces, standardized by 3GPP in Release 15.
Service-level agreement
A service-level agreement (SLA) is a contract defining the level of service a provider must deliver, how it is measured, and the remedies when missed.
Service-oriented architecture
Service-oriented architecture (SOA), or service-oriented computing, is a software design paradigm, emerging in the late 1990s, that builds applications from reusable services communicating through well-defined interfaces.
ServiceMax
ServiceMax is a cloud-based field service management software platform, built on Salesforce and owned by PTC since 2023, that manages installation, maintenance, and repair of complex equipment.
ServiceNow
ServiceNow, formerly Glidesoft, is an American software company in Santa Clara, California, founded by Fred Luddy in 2004, known for its cloud platform that automates IT service management and business workflows.
Services Hospital
Services Hospital, Lahore (SHL) is a government teaching hospital on Jail Road, Lahore, Pakistan, founded 1958 as a Mayo Hospital outpatient department. Now the 1,600-bed teaching hospital of SIMS, with a 2023 upgrade adding 24 operation theatres.
Services marketing
Services marketing is the branch of marketing concerned with intangible offerings, distinguished by intangibility, inseparability, variability, and perishability, and using frameworks such as the 7 Ps and SERVQUAL.
Services Selection Board
The Services Selection Board (SSB) is the Indian Ministry of Defence organization that assesses candidates for commission as officers in the Army, Navy, and Air Force over five days.
ServiceTitan
ServiceTitan is an American software company in Glendale, California, whose cloud platform manages scheduling, dispatching, invoicing, and more for trades contractors; it went public in 2024.
Servicio Meteorológico Nacional (Argentina)
The Servicio Meteorológico Nacional (SMN) is Argentina's national weather service, founded on 4 October 1872 under President Domingo Sarmiento as the first meteorological service in South America.
Serving cunt
Serving cunt (serve cunt) is drag and ballroom slang meaning to act in a powerfully, unapologetically feminine manner; a strong compliment, popularized by RuPaul's Drag Race, memeified in 2021 and mainstream in 2023.
Serving Size
Serving size, also called serving, is the amount of food on which a Nutrition Facts label's calories and nutrients are based. In the US it is set by FDA RACCs from NHANES data, based on what people typically consume, not a recommended amount.
Servitium
Servitium (also Seruitio, Serbitium, Σερβίτιον) was a Roman road station and municipium in Pannonia Superior at modern Bosanska Gradiška, Bosnia, on the Siscia–Sirmium road, later base of the Classis prima Pannonica.
Servitization
Servitization is the strategy by which manufacturing firms shift from selling products alone to selling bundles of goods, services, and support, a term coined in 1988.
Servius Tullius
Servius Tullius, sixth king of Rome (conventionally 578–535 BCE), credited with the census, the 193-century Servian constitution, and the Servian Wall; murdered by Tarquinius Superbus, possibly the Etruscan Mastarna.
Servo control
Servo control is the method by which a radio-controlled servo converts a command signal into a held shaft position, using pulses of about 1 to 2 ms.
Servo valve
A servo valve is an electrohydraulic valve that converts an electrical input signal into precise, stepless hydraulic flow or pressure, used in aircraft flight controls, test rigs, and steel mills.
Servomanipulator
A servomanipulator is an electrically controlled master–slave manipulator with force reflection, letting operators remotely handle hazardous materials in hot cells; the first was built at Argonne in 1954.
Servomechanism
A servomechanism, or servo, is a feedback control system whose output is mechanical motion, typically the position or speed of a shaft, driven by an error signal.
Servomotor
A servomotor is a rotary or linear actuator for precise control of position, velocity, and acceleration, used in a closed-loop servo system with a feedback encoder.
Servotronix
Servotronix (高创), formally Servotronix Motion Control Ltd., is an Israeli automation and motion control company founded in 1987, headquartered in Petah Tikva and controlled since 2017 by Midea Group.
SERVQUAL
SERVQUAL is a 22-item survey instrument for measuring perceived service quality, developed by Parasuraman, Zeithaml, and Berry in 1988 across five dimensions including reliability and empathy.
Serzh Sargsyan (Սերժ Ազատի Սարգսյան)
Serzh Sargsyan (Սերժ Ազատի Սարգսյան), Armenian politician born 1954 in Stepanakert, third president of Armenia 2008-2018 and prime minister 2007-2008 and April 2018; resigned amid protests, now before Armenia's Anti-Corruption Court.
SES (satellite constellation)
The SES satellite constellation is the multi-orbit fleet of communications satellites operated by SES S.A., a Luxembourg satellite operator, pairing geostationary satellites with the O3b medium Earth orbit system.
SES AI
SES AI Corporation, NYSE: SES, is a Woburn, Massachusetts company founded in 2012 that makes AI-enhanced lithium-metal and lithium-ion batteries for EVs, drones, and energy storage.