STAC may refer to:

Computers and electronics

* stac (Set AC Flag) instruction on x86 CPUs, part of

Supervisor Mode Access Prevention Supervisor Mode Access Prevention (SMAP) is a feature of some CPU implementations such as the Intel Broadwell microarchitecture that allows supervisor mode programs to optionally set user-space memory mappings so that access to those mappings fro ...

Stac Electronics Stac Electronics, originally incorporated as State of the Art Consulting and later shortened to Stac, Inc., was a technology company founded in 1983. It is known primarily for its Lempel–Ziv–Stac lossless compression algorithm and Stacker dis ...

, a former American technology company **

Lempel–Ziv–Stac Lempel–Ziv–Stac (LZS, or Stac compression or Stacker compression) is a lossless data compression algorithm that uses a combination of the LZ77 sliding-window compression algorithm and fixed Huffman coding. It was originally developed by Stac ...

, a data compression algorithm developed by Stac Electronics * SigmaTel Audio Codec * an extended version of the

Graphic Adventure Creator Graphic Adventure Creator (often shortened to GAC) is a game creation system/programming language for adventure games published by Incentive Software, originally written on the Amstrad CPC by Sean Ellis, and then ported to other platforms by, amon ...

software * SpatioTemporal Asset Catalog, an

open specification An open standard is a standard that is openly accessible and usable by anyone. It is also a prerequisite to use open license, non-discrimination and extensibility. Typically, anybody can participate in the development. There is no single definition ...

to describe

geospatial information Geographic data and information is defined in the ISO/TC 211 series of standards as data and information having an implicit or explicit association with a location relative to Earth (a geographic location or geographic position). It is also call ...

Education

Southern Theatre Arts Centre The Southern Theatre Arts Centre (STAC) is a training venue for performers, technicians and production students, it is based in Durrington, West Sussex, near Worthing, West Sussex, England, about 15 miles from the city of Brighton & Hove. It is a ...

, a training venue in Durrington by Sea, Worthing, West Sussex, England *

St. Thomas Aquinas College St. Thomas Aquinas College (STAC) is a private college in Sparkill, New York. The college is named after the medieval philosopher and theologian Thomas Aquinas. It was founded by the Dominican Sisters of Sparkill, whose headquarters are in t ...

, Sparkill, New York *

Saint Thomas Aquinas College (Sogod) Saint Thomas Aquinas College (STAC) is a Roman Catholic private school located at the corner between Bagares Street and Concepcion Street, Barangay Zone IV, Sogod, Southern Leyte, Philippines. It is considered one of the oldest schools in Souther ...

, Southern Leyte, Philippines *

St Andrew's College, Christchurch St Andrew's College, also known as StAC, in Christchurch, New Zealand, is a private, co-educational school that enrols from pre-school to secondary Year 13. It was founded in 1917 and it is the only independent, co-educational primary and sec ...

, New Zealand

Transportation

Service des transports de l'agglomération chambérienne Service may refer to: Activities * Administrative service, a required part of the workload of university faculty * Civil service, the body of employees of a government * Community service, volunteer service for the benefit of a community or a p ...

(Stac), a transport service in Chambéry, France; part of

Compagnie générale française des transports et entreprises The Compagnie générale française des transports et entreprises (English approximation: ''General Company of French Transport and Businesses''), commonly known by the initialism CGFTE, was a company which managed public transportation networks i ...

Service de transport adapté de la Capitale Service may refer to: Activities * Administrative service, a required part of the workload of university faculty * Civil service, the body of employees of a government * Community service, volunteer service for the benefit of a community or a pu ...

, a transport service in Quebec, Canada *

Special Transit Advisory Commission The Research Triangle Regional Public Transportation Authority, known as GoTriangle (previously Triangle Transit and Triangle Transit Authority or TTA), provides regional bus service to the Research Triangle region of North Carolina in Wake, Durha ...

, a commission that founded the Triangle Transit transport service in North Carolina, United States * STAC Swiss Government Flights, see List of airline codes (S) *

Supersonic Transport Aircraft Committee The Bristol Type 223 was an early design for a supersonic transport. In the late 1950s and early 1960s the Bristol Aeroplane Company studied a number of models as part of a large British inter-company effort funded by the government. These mod ...

Other uses

STAC (protein) STAC may refer to: Computers and electronics * stac (Set AC Flag) instruction on x86 CPUs, part of Supervisor Mode Access Prevention * Stac Electronics, a former American technology company ** Lempel–Ziv–Stac, a data compression algorithm dev ...

, a protein containing a

C1 domain C1 domain (also known as phorbol esters/diacylglycerol binding domain) binds an important secondary messenger diacylglycerol (DAG), as well as the analogous phorbol esters. Phorbol esters can directly stimulate protein kinase C, PKC. Phorbol es ...

Sepak Takraw Association of Canada Sepak takraw, or Sepaktakraw, also called kick volleyball, is a team sport played with a ball made of rattan or synthetic plastic between two teams of two to four players on a court resembling a badminton court. It is similar to volleyball and ...

, a sport association *

Sirtuin-activating compound Sirtuin-activating compounds (STAC) are chemical compounds having an effect on sirtuins, a group of enzymes that use NAD+ to remove acetyl groups from proteins. They are caloric restriction mimetic compounds that may be helpful in treating various ...

, a class of biochemical compounds * Spatial and Temporal Analysis of Crime, see

Crime hotspots Crime hotspots are areas that have high crime intensity. These are usually visualized using a map. They are developed for researchers and analysts to examine geographic areas in relation to crime. Researchers and theorists examine the occurrence ...

* ''Stac'', the Gaelic word for a

sea stack A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind and water, processes of coastal geomorpholog ...

, commonly used in Scotland

Computers and electronics

Education

Transportation

Other uses

See also