# SEM

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**SEM** or **Sem** can refer to:

## Computing

- [Search engine marketing](/source/Search_engine_marketing), promoting websites by increasing their visibility in search engine results
- [Security event manager](/source/Security_event_manager), a security log tool used on data networks

## Economics and management

- [Stock Exchange of Mauritius](/source/Stock_Exchange_of_Mauritius), the principal stock exchange of the island country of Mauritius
- [Strategic enrollment management](/source/Strategic_enrollment_management), an element of planning for new growth at a university or college
- [Samsung Electro-Mechanics](/source/Samsung_Electro-Mechanics), a South Korean company

## Energy

- [Single Electricity Market](/source/Single_Electricity_Market), the integration of the electricity sectors of the Republic of Ireland and Northern Ireland in a single market
- [Strategic energy management](/source/Strategic_energy_management), continuous improvement process for energy efficiency based on behavioral change

## Mathematics and statistics

- [Structural equation modeling](/source/Structural_equation_modeling), in data analysis
- [Simultaneous equations model](/source/Simultaneous_equations_model), in econometrics
- [Standard error of the mean](/source/Standard_error#Standard_error_of_the_mean) in statistics

## Places

- [Craig Field (Alabama)](/source/Craig_Field_(Alabama)) (IATA code: SEM), a public airport four miles southeast of Selma, in Dallas County, Alabama
- [Sem, Ariège](/source/Sem,_Ari%C3%A8ge), a former commune in the Ariège department in southwestern France
- [Sem, Norway](/source/Sem,_Norway), a village in Tønsberg Municipality in Vestfold county, Norway
- [Sem Municipality](/source/Sem_Municipality), a former municipality in Vestfold county, Norway

## Science and technology

- [Scanning electron microscope](/source/Scanning_electron_microscope)
- Space Experiment Module, of the [Freestar experiment](/source/Freestar_experiment#Space_Experiment_Module_(SEM)) on space shuttle Columbia
- [Sistema Eléctrico de Magallanes](/source/Sistema_El%C3%A9ctrico_de_Magallanes), an electrical power grid of Chile
- SEM, instrument ([seismometer](/source/Seismometer)) of the Surface Science Platform ([Kazachok](/source/Kazachok)) mission [ExoMars](/source/ExoMars) 2022
- A protecting group in organic chemistry, see [2-(trimethylsilyl)ethoxymethyl chloride](/source/2-(Trimethylsilyl)ethoxymethyl_chloride) (SEM-Cl)

## Schools, organisations, societies

- [Society for Experimental Mechanics](/source/Society_for_Experimental_Mechanics), an engineering professional organization.
- [The School of Ecclesiastic Music](/source/The_School_of_Ecclesiastic_Music) the school of Byzantine Music in Mount Lebanon
- [Swedish Evangelical Mission](/source/Swedish_Evangelical_Mission)
- [Society for Ethnomusicology](/source/Society_for_Ethnomusicology), an ethnomusicology in Indiana, US
- [Science and Engineering Magnet](/source/School_of_Science_and_Engineering), a school in Dallas, Texas, US
- [S.E.M. Group](/source/S.E.M._Group) civil engineering company based in South Australia
- [Steam Engine Makers' Society](/source/Steam_Engine_Makers'_Society), early British trade union
- Shandong Engineering Machinery, owned by [Caterpillar Inc.](/source/Caterpillar_Inc.)
- [State Secretariat for Migration (Switzerland)](/source/State_Secretariat_for_Migration_(Switzerland))

## People

- [Shem](/source/Shem) or Sem, one of the sons of Noah, as depicted in the Bible
- [Sem (given name)](/source/Sem_(given_name)), a usually masculine first name
- [Sem (artist)](/source/Sem_(artist)) (1863–1934), French caricaturist
- [Elise Sem](/source/Elise_Sem) (1870–1950), Norwegian barrister, women's activist, and sports official
- [Ingebjørg Dahl Sem](/source/Ingebj%C3%B8rg_Dahl_Sem) (born 1938), Norwegian Christian writer
- [Ingebjørg Sem](/source/Ingebj%C3%B8rg_Sem) (1931–2009), Norwegian actress
- [John Sem](/source/John_Sem) (born 1973), Papua New Guinean Olympic boxer
- [Niels Arntzen Sem](/source/Niels_Arntzen_Sem) (1782–1859), Norwegian politician
- [Suy Sem](/source/Suy_Sem) (born 1947), Cambodian politician

## Other

- [Super Étendard Modernisé](/source/Dassault-Breguet_Super_%C3%89tendard), a French fighter aircraft
- [Self-evaluation maintenance theory](/source/Self-evaluation_maintenance_theory), a psychological theory of self
- [Synthesizer Expansion Module](/source/Oberheim_SEM), an Oberheim synthesizer
- [New Austrian tunnelling method](/source/New_Austrian_tunnelling_method) or Sequential Excavation Method
- [Sports and exercise medicine](/source/Sports_medicine)

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Adapted from the Wikipedia article [SEM](https://en.wikipedia.org/wiki/SEM) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/SEM?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.