Technology terms starting with E

895 terms

  1. enterprise search administrator An administrative role that enables a user to administer the entire enterprise search system.
  2. entity A legally recognized organization.
  3. entity bean An enterprise bean that represents persistent data maintained in a database. An entity bean can manage its own persistence or can delegate this function…
  4. Entity Extraction The ability of an enterprise search platform to parse and recognize informational entities, such as geographic names, personal names, and company names.
  5. entity reference A reference to an entity that is substituted for the reference when the XML document is parsed.
  6. entity relationship diagram A graphical representation of the entities and the relationships between them. Entity relationship diagrams are a useful medium to achieve a common…
  7. entrance facility The entrance to a building for both public and private network service cables (including antenna transmission lines, where applicable), including the…
  8. entrance point In a building, the point of emergence of telecommunications service cables through an exterior wall, floor slab, or from a rigid metal conduit or…
  9. entrance room In a building, a space in which the joining of inter- and/or intrabuilding telecommunications backbone facilities takes place.
  10. Entrapment The act of inducing a person to commit a crime so that a criminal charge will be brought against him.
  11. Entropy A measure of the unavailable or unusable energy in a system; energy that cannot be converted to another form.
  12. Entry Page See Gateway Page.
  13. enum A Java keyword used to declare an enumerated type.
  14. enumerated type A data type - not directly available in Java - in which symbolic names are used for a sequence of constant numeric values.
  15. envelope The boundary of the family of curves obtained by varying a parameter of a wave. See figure under amplitude modulation.
  16. envelope delay distortion Signal distortion that results when the rate of change of phase shift with frequency over the necessary bandwidth of the signal is not constant.
  17. envelope journaling Envelope journaling differs from message-only journaling and Bcc journaling because it permits you to archive transport envelope information (P1 message…
  18. envelope message overhead There is a small overhead for each journalized message, because the envelope journal message includes a plain text report with the original message…
  19. Environment All the natural and living things around us. The earth, air, weather, plants, and animals all make up our environment.
  20. environment variable A mechanism by which some high-level agent such as a user can pass its preferences down to its future offspring (child processes, grandchild processes…
  21. Environmental Assessment (EA) A public document that analyzes a proposed federal action for the possibility of significant environmental impacts.
  22. environmental control management of the conditions where records are stored, including temperature, humidity, air quality, light, and pests See also climate control.
  23. environmental fault bus (EFB) A storage shelf component that is used to note disk and shelf events, including disk insertion or removal, fan faults, and power supply faults.
  24. Environmental Impact Statement (EIS) A comprehensive study of likely environmental impacts resulting from major federally-assisted projects; statements are required by the National…
  25. environmental monitoring unit (EMU) A storage shelf component that is used to note disk and shelf events, including disk insertion or removal, fan faults, and power supply faults.
  26. Environmental Security A specialized form of physical security that prevents technical penetration, e.g., penetration by waves of electron beams.
  27. Environments The media, conditions, and/or physical objects in which a BMD asset is immersed or surrounded.
  28. EO Elected Office - the national Office or intergovernmental organization of or acting for the Contracting State elected by the applicant under Chapter II of…
  29. EO/IR See Electro-Optics Infrared.
  30. EOA Early Operational Assessment.
  31. EOB (1) Enemy Order of Battle. (2) Electronic Order of Battle.
  32. EOC (1) See Element Operations Center. (2) Emergency Operations Center 96
  33. EOCM Electro-Optic Countermeasure.
  34. EOCT Element Operations Center Test Bed.
  35. EOD Explosive Ordnance Detail
  36. EOF End of File. Sometimes used metaphorically as the terminating string of a "here document".
  37. EOL End Of Life. The period when a product is supported but not sold.
  38. EOM End of Message.
  39. EOP Executive Office of the President
  40. EORSAT ELINT Ocean Reconnaissance Satellite (US).
  41. EOS Earth Orbiting System (NASA term).
  42. EOSH Environmental Operational Safety and Health.
  43. EOT Abbreviation for end-of-transmission character.
  44. EOW Abbreviation for engineering orderwire.
  45. EP (1) Engagement Planning. (2) Evaluation Plan
  46. EP Cycle Engagement Planner Cycle (NMD BMC2 term).
  47. EPA See Environmental Protection Agency.
  48. EPD See: expected progeny difference.
  49. Ephemeral Keys Short-lived cryptographic keys that are statistically unique to each execution of a key establishment process and meets other requirements of the key type…
  50. ephemeral store See instance store>/a>.
  51. ephemeris A electronic or hard-copy table or listing of the predicted positions of astronomical bodies such as the planets or the Moon; and by extension, the…
  52. Ephemeris/ Ephemerides (1) A table showing the positions of an object in space at regular intervals of time.
  53. EPITS Essential Program Information Technology and Systems.
  54. EPL Emitter Parameter Listing (USN term).
  55. EPLRS Enhanced Position Locator Reporting System.
  56. EPO European Patent Office
  57. epoch The date from which time is measured. For most Unix environments, the epoch is January 1, 1970.
  58. epoch date A date in history, chosen as the reference date from which time is measured. Note 1: An example of an epoch date is the beginning instant of January 1…
  59. EPP Electric Power Plant (PATRIOT).
  60. EPROM Electrically Programmable Read-Only Memory.
  61. EQEC EurQuantum Electronics Conference (See CLEO).
  62. equal access costs Include only initial incremental presubscription costs and initial incremental expenditures for hardware and software related directly to the provision of…
  63. Equal Error Rate (EER) A statistic used to show biometric performance, typically when operating in the verification task.
  64. equal gain combiner A diversity combiner in which the signals on each channel are added. Note: The channel gains can be made to remain always and everywhere equal so that the…
  65. Equal Level Echo Path Loss The term "Equal Level Echo Path Loss" (ELEPL) denotes the measure of Echo Path Loss (EPL) at a 4-wire interface which is corrected by the difference…
  66. equal-length code A telegraph or a data code in which (a) all the words or code groups are composed of the same number of unit elements, (b) each element has the same…
  67. equal-level patch bay An analog patching facility at which all nominal input and output voice frequency levels are uniform.
  68. equalization The maintenance of system transfer function characteristics within specified limits by modifying circuit parameters.
  69. equation item An arithmetic expression used in place of an itemname in an ARC/INFO command. For example, to list feature areas, a user could specify LIST AREA; to list…
  70. Equator The parallel of reference 0 north or south.
  71. equatorial orbit For a satellite orbiting the Earth, an orbit in the equatorial plane. Note: An equatorial orbit has an inclination angle of 0°.
  72. equilibrium coupling length Synonym equilibrium length.
  73. equilibrium length For a specific excitation condition, the length of multimode optical fiber necessary to attain equilibrium mode distribution.
  74. equilibrium mode distribution (EMD) That condition in a multimode fiber wherein after propagation has taken place for a certain distance, called the "equilibrium length," the relative power…
  75. equilibrium mode distribution length Synonym equilibrium length.
  76. equilibrium mode power distribution Synonym equilibrium mode distribution.
  77. equilibrium mode simulator For an optical fiber, a device or optical system used to create an approximation of the equilibrium mode distribution.
  78. equipment clock A clock that satisfies the particular needs of equipment and, in some cases, may control the flow of data at the equipment interface.
  79. equipment intermodulation noise Intermodulation noise introduced into a system by a specific piece of equipment.
  80. equipment mailbox An equipment mailbox is a type of resource mailbox that is assigned to a non-location-specific resource such as a laptop projector, microphone, or company…
  81. Equipment Operationally Ready The status of an item of equipment in the possession of an operating unit that indicates it is capable of fulfilling its intended mission and in a system…
  82. equipment room In a building, a centralized space for telecommunications equipment that serves the occupants of the building.
  83. equipment side The portion of a device that is directly connected to facilities internal to a station, such as the data terminal equipment (DTE) side of the…
  84. equipotential ground plane A mass, or bonded masses, of conducting material that offer a negligible impedance to current flow.
  85. equity holder A Federal or Presidential organization that owns or has a stake in information found in a record, and so must participate in decisions relating to the…
  86. Equivalent Equal under patent law. MPEP 904.01(b), MPEP 2144.06, MPEP 2183.
  87. equivalent gauge A standard cross section of cable conductors for use in equating the metallic content of cable conductors of all gauges to a common base. [47 CFR Pt.36-A]
  88. equivalent network In a system, a network that may replace another network without altering the performance of the system. 2.
  89. equivalent noise resistance A quantitative representation in resistance units of the spectral density of a noise-voltage generator, given by Rn = (Wn)/(kT0), where Wn is the spectral…
  90. equivalent noise temperature The temperature, usually expressed in kelvins, of a hypothetical matched resistance at the input of an assumed noiseless device, such as a noiseless…
  91. equivalent pair kilometers The product of sheath kilometers and the number of equivalent gauge pairs of conductors in a cable. [47 CFR Pt.36-A]
  92. equivalent pulse code modulation (PCM) noise The amount of thermal noise power on a frequency-division multiplexed (FDM) or wire channel necessary to approximate the same judgment of speech quality…
  93. equivalent satellite link noise temperature The noise temperature referred to the output of the receiving antenna of the Earth station corresponding to the radio-frequency noise power which produces…
  94. equivalent sheath kilometers The product of (a) the length of a section of cable in kilometers (sheath kilometers) and (b) the ratio of the metallic content applicable to a particular…
  95. ER Describes cells that do not have a protein to which the hormone estrogen will bind.
  96. ER link Abbreviation for emergency response link.
  97. ERA A time period dominated by a particular physical process.
  98. ERADCOM OBSOLETE. Army Electronics Research and Development Command. (Now Laboratory Command (LABCOM), Adelphi, MD.) 97
  99. erase To obliterate information from a storage medium, such as to clear or to overwrite. 2.
  100. erasure [A] process intended to render magnetically stored information irretrievable by normal means. [INFOSEC-99]