AST
Encyclopedia
AST is a three-letter abbreviation that stands for a number of different things.
In science and technology
In medicine
In mathematics
Organisations and companies
In education
In politics and government
In transport
Time zones
Other uses
In science and technology
- Abstract syntax treeAbstract syntax treeIn computer science, an abstract syntax tree , or just syntax tree, is a tree representation of the abstract syntactic structure of source code written in a programming language. Each node of the tree denotes a construct occurring in the source code. The syntax is 'abstract' in the sense that it...
, a finite, labeled, directed tree used in computer science - Andrew S. TanenbaumAndrew S. TanenbaumAndrew Stuart "Andy" Tanenbaum is a professor of computer science at the Vrije Universiteit, Amsterdam in the Netherlands. He is best known as the author of MINIX, a free Unix-like operating system for teaching purposes, and for his computer science textbooks, regarded as standard texts in the...
, a computer scientist (often uses this acronym as his identifier) - Asynchronous System TrapAsynchronous System TrapAsynchronous system trap refers to a mechanism used in several computer operating systems designed by the former Digital Equipment Corporation of Maynard, Massachusetts....
s, a mechanism used in several computer operating systems
In medicine
- Aspartate transaminaseAspartate transaminaseAspartate transaminase , also called aspartate aminotransferase or serum glutamic oxaloacetic transaminase , is a pyridoxal phosphate -dependent transaminase enzyme . AST catalyzes the reversible transfer of an α-amino group between aspartate and glutamate and, as such, is an important enzyme in...
, an enzyme associated with liver parenchymal cells - Agitated saline test (agitated saline contrast testAgitated saline contrast testAn agitated saline contrast test , also agitated saline contrast study, agitated saline bubble study, agitated saline bubble test, bubble study, or bubble test, is a technique used to obtain additional information from an echocardiogram.The technique uses a saline solution which is agitated by...
), a diagnostic heart procedure
In mathematics
- Alternating series testAlternating series testThe alternating series test is a method used to prove that infinite series of terms converge. It was discovered by Gottfried Leibniz and is sometimes known as Leibniz's test or the Leibniz criterion.A series of the form...
, a method used to prove that infinite series of terms converge - Alternative set theoryAlternative set theoryGenerically, an alternative set theory is an alternative mathematical approach to the concept of set. It is a proposed alternative to the standard set theory.Some of the alternative set theories are:*the theory of semisets...
, an alternative mathematical approach to the concept of set
Organisations and companies
- Allied Security TrustAllied Security TrustAllied Security Trust is a member based patent holding company that helps protect members from patent infringement lawsuits by non-practicing entities.-Business:...
, a patent holding companyPatent holding companyPatent holding companies are companies set up to administer, consolidate and license patents or otherwise enforce patent rights, such as through litigation... - AST ResearchAST ResearchAST Research, Inc. was a personal computer manufacturer, founded in Irvine, California in 1980 by Albert Wong, Safi Qureshey and Thomas Yuen. AST's original business was the manufacture and marketing of a broad range of microcomputer expansion cards, later focusing on higher-density replacements...
, a defunct personal computer manufacturer - Association for Software TestingAssociation for Software TestingThe Association for Software Testing, commonly referred to as the AST, is dedicated to advancing the understanding of the science and practice of software testing according to . ASTs membership consists of scholars, students and practitioners who are interested in the advancement of the field of...
, a nonprofit organization dedicated to advancing software testing - AST (publisher)AST (publisher)AST is one of the largest book publishing companies in Russia. AST and its rival Eksmo together publish approximately 30% of all Russian books. The company is headed by Oleg Bartenev...
- AST, American Sensor Technologies, Inc., A sensor manufacturing company
In education
- Ameson Scholastic Test, originally designed for Chinese students applying to the University of Cambridge in the UK, and now used by a handful of UK and Australian universities
- ACT Scaling TestACT Scaling TestThe ACT Scaling Test is a test of aptitude in studies for Year 12 students in the Australian Capital Territory set by the ACT Board of Senior Secondary Studies and created by the Australian Council for Educational Research...
, a series of aptitude tests taken by Year 12 students in ACT, Australia - Alpha Sigma TauAlpha Sigma TauAlpha Sigma Tau is a national Panhellenic sorority founded on November 4, 1899, at Michigan State Normal College...
, a national collegiate sorority of the United States - Atlantic School of TheologyAtlantic School of TheologyThe Atlantic School of Theology is a Canadian ecumenical university which provides "graduate level theological education and research, and in formation for Christian ministries, lay and ordained, in church and society, primarily in Atlantic Canada". It is located in Halifax, Nova Scotia and its...
, an ecumenical university in Atlantic Canada - Conroe ISD Academy of Science and TechnologyConroe ISD Academy of Science and TechnologyThe Conroe Independent School District Academy of Science and Technology, in Conroe, Texas is a specialized magnet school in science and technology; also a member of NCSSSMST. It was founded at Oak Ridge High School with the first graduates in 1991. The AST relocated to The Woodlands College Park...
, a specialized magnet school of science and technology in Conroe, Texas - Avalanche Skills TrainingAvalanche Skills TrainingAvalanche Skills Training is a standardized form of avalanche training in Canada. The training is provided in two levels: AST1 and AST2. AST 1 includes basic snow study and training on the use of a transceiver, probe and shovel in companion rescue. AST2 concentrates on advanced snow study. Further...
, a standardized form of avalanche training in Canada - American School of TegucigalpaAmerican School of TegucigalpaThe American School of Tegucigalpa is a private, coeducational international school located in the affluent neighborhood of Lomas de Guijarro which overlooks Tegucigalpa...
- Advanced Skills TeacherAdvanced Skills TeacherAdvanced Skills Teacher is a role in a maintained school in England and Wales. Advanced Skills Teachers are judged through external assessment against a range of criteria to demonstrate excellent classroom teaching practice...
- a specific type of teaching role in England and Wales - Associate in Specialized Technology, a type of Associate's degreeAssociate's degreeAn associate degree is an undergraduate academic degree awarded by community colleges, junior colleges, technical colleges, and bachelor's degree-granting colleges and universities upon completion of a course of study usually lasting two years...
In politics and government
- Office of Commercial Space TransportationOffice of Commercial Space TransportationThe Office of Commercial Space Transportation is the branch of the United States Federal Aviation Administration that approves any commercial rocket launch operations—that is, any launches that are not classified as model, amateur, or "by and for the government."-Overview:Under...
, a branch of the US Federal Aviation Administration - Aviation Survival TechnicianAviation Survival TechnicianAviation Survival Technicians are enlisted United States Coast Guard airborne "rescue swimmers". They are trained at the U.S. Coast Guard's enlisted Aviation Survival Technician/Rescue Swimmer school at Coast Guard Air Station Elizabeth City, North Carolina...
, a United States Coast Guard rating - Alaska State TroopersAlaska State TroopersThe Division of Alaska State Troopers is the state police agency of Alaska. It is a division of the Alaska Department of Public Safety . The Alaska State Troopers are a full service law enforcement agency and handle both traffic and criminal law enforcement...
, the state police force for the State of Alaska - Chadian Social ActionChadian Social ActionThe Chadian Social Action was an African political party founded in 1953 in Colonial Chad. It was born as an offshoot of the Chadian Democratic Union , and like the mother party it represented French commercial interest and Muslim and African traditional chiefs...
(Action Sociale Tchadienne), a defunct Chadian political party
In transport
- Astoria Regional AirportAstoria Regional AirportAstoria Regional Airport , is a public airport located three miles southwest of the city of Astoria in Clatsop County, Oregon, United States. It is located in the adjacent city of Warrenton.-Airlines and destinations:...
, a public airport of Clatsop County, Oregon, USA (FAA Identifier: AST) - Aston railway stationAston railway stationAston railway station serves the districts of Aston and Nechells in Birmingham, England. The passenger entrance is on Lichfield Road.The station is situated adjacent to and above the Lichfield Road , crossed by a bridge as the railway line, part of the original Grand Junction Railway, opened in...
, a railway station in Aston in Birmingham, England (National Rail code: AST)
Time zones
- Atlantic Standard Time — UTC-4UTC-4UTC−04-00 is an identifier for a time offset from UTC of −04.This offset is used in the Atlantic Standard Time Zone in Canada and the North American Eastern Time Zone during daylight saving time , in the Caribbean region this is considered as the Eastern Caribbean timezone...
- Alaska Standard Time — UTC-9UTC-9UTC−09 is an identifier for a time offset from UTC of −09. This time is used in:-As standard time :*United States**Alaska...
- Arabia Standard Time — UTC+3UTC+3UTC+03:00 is an identifier for a time offset from UTC of +03. In ISO 8601 the associated time would be written as . This time is used in:-East Africa Time:*Comoros*Djibouti*Eritrea*Ethiopia*Kenya*Madagascar...
Other uses
- Assured shorthold tenancyAssured shorthold tenancyThe Assured Shorthold Tenancy is the default tenancy for most dwellings in England and Wales. It is a form of Assured tenancy with limited security of tenure, which was introduced by the Housing Act 1988, with important changes made by the Housing Act 1996....
, a form of Assured tenancy with limited security of tenure - Asturian languageAsturian languageAsturian is a Romance language of the West Iberian group, Astur-Leonese Subgroup, spoken in the Spanish Region of Asturias by the Asturian people...
, a Romance language spoken in Asturias, Spain (ISO 639 alpha-3, ast) - Arsenal Supporters' TrustArsenal Supporters' TrustThe Arsenal Supporters' Trust is the official supporters' trust of Arsenal Football Club, as recognised by Supporters Direct. The group, like other supporters' trusts, seeks to strengthen the influence of supporters over the destiny of their clubs through democratic supporter ownership.-History and...
, London, UK. Arsenal FC's critical friend of supporters and shareholders - Athlitikos Syllogos Trikala 2000 BCAthlitikos Syllogos Trikala 2000 BCA.S. Trikala 2000 BC, full name, Athlitikos Syllogos Trikala 2000 KAE, was a Greek professional basketball club that is located in Trikala, Greece. The club is commonly known as either Trikala 2000 or Trikala BC...
, a top tier Greek basketball team - Astana TeamAstana TeamAstana is a professional road bicycle racing team sponsored by the Astana group, a coalition of state-owned companies from Kazakhstan and named after its capital city Astana. Astana attained UCI ProTeam status in its inaugural year, 2007...
, the UCI code for the professional road bicycle racing team - Anti Structure Tandem, a type of tandem-chargeTandem-chargeA tandem-charge weapon is an explosive device or projectile that has two or more stages of detonation. It is effective against cage armor, which is designed to protect an armored vehicle against anti-tank munitions. The first stage of the weapon triggers the reactive armor of the target, limiting...
where the second charge can be delayed so that it explodes deep inside the structure