ExpertGlossary terms starting with S

4,972 terms

  1. Source Selection Evaluation Board A group of military and/or government civilian personnel, representing functional and technical disciplines.
  2. Source Selection Plan (SSP) A formal written document, which sets forth the source selection organization and management chain for a specific acquisition.
  3. source user The user providing the information to be transferred to a destination user during a particular information transfer transaction.
  4. Source Water Assessment Plan (SWAP) A requirement of the 1996 amendments to the federal Safe Drinking Water Act that an assessment and protection plan be developed for each surface water…
  5. source/destination checking A security measure to verify that an EC2 instance is the origin of all traffic that it sends and the ultimate destination of all traffic that it receives…
  6. South Carolina Retirement System (SCRS) This is the name of the retirement system covering state employees, public school employees, public higher education personnel, and employees of other…
  7. South Carolina Retirement Systems This is the name commonly used to refer to the Retirement Division of the State Budget and Control Board .
  8. Southern blot A nitrocellulose or nylon membrane to which DNA fragments previously separated by gel electrophoresis, have been transferred by capillary action.
  9. Southern blotting See Southern hybridization.
  10. Southern Great Plains (SGP) site The first of the ARM research sites, the SGP site is located in south Kansas and north Oklahoma.
  11. Southern hybridization A procedure in which a cloned, labelled segment of DNA is hybridized to DNA restriction fragments on a Southern blot.
  12. Southern hybridization (Southern blotting) A procedure in which DNA restriction fragments are transferred from an agarose gel to a nitrocellulose filter, where the denatured DNA is then hybridized…
  13. Southern Oscillation (SO) - a "see-saw" in surface pressure in the tropical Pacific characterized by simultaneously opposite sea level pressure anomalies at Tahiti, in the…
  14. Southern Oscillation Index A numerical index measuring the state of the Southern Oscillation. The SOI is based on the (atmospheric) pressure difference between Tahiti and Darwin…
  15. Southwest Regional Gap Analysis Project (SWReGAP) The Southwest Regional Gap Analysis Project is an update of the Gap Analysis Program's mapping and assessment of biodiversity for the five-state region…
  16. Sovereign Immunity The doctrine that the government, state or federal, is immune to lawsuit unless it gives consent to the suit through statute.
  17. SOW Statement of Work.
  18. SOX (Sarbanes-Oxley Act of 2002) A U.S. federal law that requires the preservation of records by certain exchange members, brokers, and dealers. [Exchange 2007]
  19. soy A product from a plant of Asian origin that produces beans used in many food products.
  20. soya (SOY-uh) A product from a plant of Asian origin that produces beans used in many food products.
  21. soybean A product from a plant of Asian origin that produces beans used in many food products.
  22. SP (1) Security Personnel. (2) Self propelled. (3) Signal Processing.
  23. SP-100 Space Power-100 kW.
  24. SP/CR Software Problem/Change Request.
  25. SPACC Space Command Center.
  26. space In telegraphy, one of the two significant conditions of encoding. Note 1: The complementary significant condition is called a "mark.
  27. Space and Missile Tracking System (SMTS) Space-based satellite sensors for surveillance, tracking, and discrimination of enemy objects during post-boost and midcourse phases.
  28. Space Based Infrared System (SBIRS) SBIRS will be a consolidated system that will meet United States infrared space surveillance needs through the next 2-3 decades.
  29. Space Command Center (SPACC) A USSPACECOM center located on Peterson AFB, CO, in Building 147(1). It is the primary command facility for USSPACECOM providing USCINCSPACE with the…
  30. Space Control Operations Operations that provide freedom of action in space for friendly forces while, when directed, denying it to an enemy; includes the broad aspects of…
  31. Space Defense The defensive aspect of space control operations which includes all active or passive measures planned or taken to defeat attacks against friendly space…
  32. Space Defense Operations Center (SPADOC) A center in CMAFB responsible for monitoring and reporting of ASAT attacks on Blue satellites, negating designated satellites, and reconstituting and…
  33. Space Detection and Tracking System (SPADATS) A network of space surveillance sensors operated by the U.S. Air Force. 272
  34. space diversity A method of transmission or reception, or both, in which the effects of fading are minimized by the simultaneous use of two or more physically separated…
  35. Space Environment Center (SEC) - This center provides real-time monitoring and forecasting of solar and geophysical events, conducts research in solar-terrestrial physics, and…
  36. Space Environment Forecast Center (SEFC) Center at Peterson AFB, CO that supplies terrestrial and solar weather to the CMAFB Weather Support Unit (WSU) and designated USSPACECOM units.
  37. Space Forecast Center (SFC) Center at Falcon AFB, CO that supplies solar and space environmental warnings, analyses, and forecasts to USSPACECOM, NORAD, and DoD customers.
  38. Space Heater A movable or fixed heater used to heat individual rooms.
  39. Space Mines Devices that can track and follow a target in orbit, with the capability of exploding on command or by pre-program to destroy the target.
  40. Space Object Identification (SOI) Use of radar, imaging, and other collection resources to determine size, shape, ephemeris, and identity of space objects.
  41. space operation service A radiocommunication service concerned exclusively with the operation of spacecraft, in particular space tracking, space telemetry and space telecommand.
  42. Space Power Generation and control of electrical energy in space, from various originating sources (e.g., nuclear, chemical, solar).
  43. space radiocommunication Any radiocommunication involving the use of one or more space stations or the use of one or more reflecting satellites or other objects in space.
  44. space research service A radiocommunication service in which spacecraft or other objects in space are used for scientific or technological research purposes. [NTIA] [RR]
  45. space station A station located on an object which is beyond, is intended to go beyond, or has been beyond, the major portion of the Earth's atmosphere.
  46. space subsystem In satellite communications, that portion of the satellite link that is in orbit.
  47. Space Support Operations Operations required to ensure that space control and support of terrestrial forces are maintained.
  48. Space Surveillance (SPASUR) An operational space surveillance system with the mission to detect and determine the orbital elements of all man-made objects in orbit of the earth.
  49. Space Surveillance Center (SSC) A center in CMAFB responsible for maintaining the satellite catalog, laser clearinghouse, collision and RFI avoidance, and Tracking and Impact Prediction…
  50. space system Any group of cooperating Earth stations and/or space stations employing space radiocommunication for specific purposes. [NTIA] [RR] [47CFR]
  51. space telecommand The use of radiocommunication for the transmission of signals to a space station to initiate, modify or terminate functions of equipment on an associated…
  52. space telemetry The use of telemetry for the transmission from a space station of results of measurements made in a spacecraft, including those relating to the…
  53. space tracking Determination of the orbit, velocity or instantaneous position of an object in space by means of radiodetermination, excluding primary radar, for the…
  54. Space Transportation System (STS) A national asset that provides routine access to space for both civil and defense users.
  55. Space Weather Refers to conditions on the Sun, in the solar wind, and in Earth’s space (magnetic field, ionosphere, and thermosphere) that can influence space- and…
  56. Space-Based Architecture Study (SBAS) A 1989 study to review the space-based elements of the Phase I SDS architecture, with emphasis on Space-Based Interceptor (SBI), Brilliant Pebbles (BP)…
  57. Space-Based Interceptor (SBI) OBSOLETE. A distributed set of low earth orbit satellites that may provide launch detection and booster tracking, and that serve as kinetic or kinetic…
  58. Space-Based Sensor A system that provides global above-the-horizon surveillance to detect and track PBVs, object clusters (RVs and penaids ), and resolved midcourse objects…
  59. Space-Based Surveillance and Tracking System (SSTS) OBSOLETE. A satellite-borne electro-optic tracking and surveillance system in medium earth orbit.
  60. space-division multiplexing A misnomer. Note: Space-division multiplexing has been improperly applied to the use of multiple physical transmission channels, e.g.
  61. space-division switching In telephony, switching in which single transmission-path routing determination is accomplished in a switch by using a physically separated set of matrix…
  62. spacecraft A man-made vehicle which is intended to go beyond the major portion of the Earth's atmosphere. [NTIA] [RR] [47CFR]
  63. Spacer (Window) Strips of material used to separate multiple panes of glass within the windows.
  64. spacer sequence A DNA sequence separating neighbouring genes; spacer sequences are not usually transcribed.
  65. Spacetime The theory of relativity says that time cannot be treated absolutely separately from space, only in one observer's relative view.
  66. Spacetrack USSPACECOM global system of radar, optical, and radiometric sensors linked to a computation and analysis center in the Space Surveillance Center.
  67. Spacing In blasting, the distance between holes in a row. Apparent spacing is the spacing as outlined by the delay pattern.
  68. spacing bias The uniform lengthening of all spacing signal pulses at the expense of the pulse width of all marking signal pulses.
  69. spacing end distortion See end distortion.
  70. spacing pulse Synonym yyspace.
  71. spacing signal Synonym yyspace.
  72. SPADATS Space Detection and Tracking System.
  73. SPADCCS Space Defense Command and Control System.
  74. SPADOC Space Defense Operations Center. (U.S. anti-satellite mission control).
  75. SPADTS Space Detection and Tracking System.
  76. Spalling The chipping or erosion of masonry caused by abuse or weathering
  77. Spalling (spall) The loss of surface concrete usually caused by impact, abrasion, or compression. To break off from a surface in sheets or pieces.
  78. Spam Unelicited emails in large quantities; rapidly repeated scrolling text.
  79. Spam Check A resource used for checking the validity of an email sender.
  80. Spam List Some Domain Name Servers (DNS) on the Internet contain a list of addresses from mail servers that are solely used for email spam.
  81. Spamdexing The alteration or creation of a document with intent to deceive an electronic catalog or filing system.
  82. Spamglish keyword-rich gibberish used as search engine fodder instead of thoughtfully written, interesting content.
  83. Spammer Someone who sends spam.
  84. Spamming See spamdexing. Spamming is also used more generally to refer to the sending of unsolicited bulk electronic mail, and the search engine use is derived…
  85. Spamvertise Something is spamvertised when it is promoted (or merely appears) in spam. The term is commonly used with Web sites or email addresses that are part of…
  86. Spandrel 1. A panel between the top of one window and the sill of another window on the story directly above it. 2.
  87. Spandrel Area The portion of the facade below the sill of an upper story window and above the lintel of the window or display window directly below it or above the…
  88. SPAR Abbreviation for single primer amplification reaction.
  89. Spar Barge A barge retired from active service and used to anchor other barges or a fleet of barges.
  90. spare An individual part, subassembly, or assembly supplied for the maintenance or repair of systems or equipment.
  91. sparger A device that introduces, into a bioreactor, air in the form of fine bubbles.
  92. Spark spread The difference in price between electricity purchased from the grid and electricity generated from, for example, purchased natural gas.
  93. SPARQL SPARQL Protocol and RDF Query Language (pronounced “sparkle”) is an RDF query language much like SQL is a relational DB query language.
  94. SPARTA SPARTA , Inc., Laguna Hills, CA.
  95. Spartan Nuclear-armed, long-range mid-course interceptor used in SAFEGUARD/Sentinel systems.
  96. SPAS Space Power Architecture Study.
  97. spasm (SPA-zum) A sudden contraction of a muscle or group of muscles, such as a cramp.
  98. SPASUR See Space Surveillance.
  99. spatial analysis The process of modeling, examining, and interpreting model results. Spatial analysis is useful for evaluating suitability and capability, for estimating…
  100. spatial application An application requiring high spatial resolution, possibly at the expense of reduced temporal positioning accuracy, i.e., increased jerkiness.