Technology terms starting with F

915 terms

  1. Federal Public Key Infrastructure Policy Authority (FPKI PA) The Federal PKI Policy Authority is a federal government body responsible for setting, implementing, and administering policy decisions regarding…
  2. Federal Telecommunications System (FTS) A switched long-distance telecommunications service formerly provided for official Federal Government use.
  3. Federal Telecommunications System 2000 service See FTS2000.
  4. federated application A Web-based application that is AD FS-enabled, meaning that it can be accessed by federated users.
  5. federated identity management (FIM) Allows individuals to sign in to different networks or services, using the same group or personal credentials to access data across all networks.
  6. Federated search In a federated search, users receive results from multiple search and retrieval systems - for example, from other search engines, commercial information…
  7. federated user A user whose account resides in an account partner organization and who can access federated applications that reside in a resource partner organization.
  8. federation A pair of realms or domains that have established a federation trust.
  9. federation server A computer that has been configured to host the Federation Service component of Active Directory Federation Services (AD FS).
  10. federation server proxy A computer that has been configured to host the Federation Service Proxy component of Active Directory Federation Services (AD FS).
  11. Federation Service An installable role service of Active Directory Federation Services (AD FS) that is used to create a federation server.
  12. Federation Service Proxy An installable role service of Active Directory Federation Services (AD FS) that is used to create a federation server proxy.
  13. FEDSIM Federal System Integration and Management.
  14. Feed A component that "feeds" the signal from the optical system to the amplification electronics. Also called a "feed horn" or "horn".
  15. Feed Reader Software or website used to subscribe to feed update notifications. See also: Bloglines - popular web based feed reader Google Reader - popular web based…
  16. feed-forward path In the encoder, the signal path from the input of the PCM-to-uniform-PCM converter to the output of the adaptive quantizer.
  17. feedback the process by which an initial change brings about additional change that either reinforces or counteracts the initial change.
  18. Feedback Control A process by which output or behavior of a machine or system is used to change its operation in order to constantly reduce the difference between the…
  19. feedback path The signal path from the input of the bit-masking block to the output of the adaptive predictor. [T1.310-1991]
  20. feeder echo noise Signal distortion resulting from reflected waves in a transmission line that is many wavelengths long and mismatched at both the generator and the load…
  21. feeder link A radio link from an Earth station at a given location to a space station, or vice versa, conveying information for a space radiocommunication service…
  22. feeder server The component of a news server that accepts news feeds from other news servers.
  23. FEL Free Electron Laser.
  24. FEMA - Federal Emergency Management Agency.
  25. Fence The boundary of a trusted region [CESG].
  26. fence penetrability The ability of features outside a trusted region to penetrate a fence - thus leading to a potential or actual breach of the System Security Policy [CESG].
  27. Fenced Funding An identified aggregation of resources reviewed, approved, and managed as a distinct entity.
  28. FEP Abbreviation for front-end processor.
  29. FER Financial Execution Review.
  30. FERET (FacE REcognition Technology program) A face recognition development and evaluation program sponsored by the U.S. Government from 1993 through 1997. For more information visit www.frvt.
  31. Fermat's principle A principle stating that a ray of light follows the path that requires the least time to travel from one point to another, including reflections and…
  32. FES Facility Engineering Surveillance Plan.
  33. FET Field Effect Transistor.
  34. FET photodetector A photodetector using photogeneration of carriers in the channel region of a field-effect transistor structure to provide photodetection with current gain.
  35. fetch protection [An] AIS-provided restriction to prevent a program from accessing data in another user's segment of storage. [NIS] 2.
  36. fetch-execute cycle The simple set of steps that are endlessly repeated by a computer's Central Processing Unit for each program instruction: `Fetch the next instruction…
  37. FEU Flight Evaluation Unit.
  38. FEWS Follow-on Early Warning System.
  39. FF Fire Finder Radar (US Army. 106
  40. FFA Free for all pages are pages which allow anyone to add a link to them. Generally these links do not pull much weight in search relevancy algorithms…
  41. FFBD Functional Flow Block Diagram.
  42. FFCD Full, Final and Complete Disclosure (Treaty negotiation term).
  43. FFD Fraction Failure Detected.
  44. FFH Fast Frequency Hopping.
  45. FFP Firm Fixed Price.
  46. FFRDC Federally Funded Research and Development Center.
  47. FGC Functional Group Code (Navy ILS term).
  48. FGEP Fixed Ground Entry Point.
  49. FH Full Health
  50. FI Fault Isolation.
  51. FI&A Fault Isolation and Analysis.
  52. fiber (FY-ber) In food, fiber is the part of fruits, vegetables, legumes, and whole grains that cannot be digested. The fiber in food may help prevent cancer.
  53. fiber amplifier A device that amplifies an optical signal directly, without the need to convert it to an electrical signal, amplify it electrically, and reconvert it to…
  54. fiber axis The longitudinal center of symmetry of an optical fiber, i.e., the locus of points that are determined by the centers of mechanical symmetry of the…
  55. fiber bandwidth See bandwidth (of an optical fiber).
  56. fiber buffer See buffer.
  57. fiber cable See fiber optic cable.
  58. Fiber Channel Generic Services (FCGS) An ANSI standard that specifies various Fibre Channel services.
  59. fiber cutoff wavelength (λcf) See cutoff wavelength.
  60. fiber dispersion See dispersion.
  61. Fiber Distributed Data Interface (FDDI) A media access (transmission) control-level protocol with token-ring architecture, a communication bandwidth of 100 Mbps and supported on a fiber network…
  62. fiber optic bus See bus.
  63. fiber optic cable A telecommunications cable in which one or more optical fibers are used as the propagation medium.
  64. fiber optic isolator See optical isolator.
  65. fiber optic link A communications link that transmits signals by means of modulated light propagated in an optical fiber.
  66. fiber optics (FO) The branch of optical technology concerned with the transmission of light through fibers made of transparent materials such as glasses and plastics.
  67. fiber pigtail See pigtail.
  68. Fibre Channel (FC) A high-speed transmission technology.
  69. Fibre Channel Industry Association (FCIA) A trade association devoted to promoting Fibre Channel technology.
  70. Fibre Channel-Arbitrated Loop (FCAL) A type of Fibre Channel network in which devices are connected in a loop topology.
  71. Ficon Mainframe channel devised by IBM that supports data rates of 1 Gbit/s at distances from about 10 to 20 kilometers over fiber.
  72. FICON (Fibre Connectivity) a fibre optic technology that provides higher speeds at longer distances than ESCON. See ESCON.
  73. fidelity The degree to which a system, or a portion of a system, accurately reproduces, at its output, the essential characteristics of the signal impressed upon…
  74. FIDO Fighter Duty Officer (JFACC term).
  75. FidoNet A network designed for e-mail distribution through individual bulletin board systems rather than through Internet servers.
  76. field Field A region of space at each point of which a given physical or mathematical quantity has some definite value.
  77. Field collapsing Used in order to collapse a group of results with similar value for a given field to a single entry in the result set.
  78. field data collector An electronic device that collects and stores observation information from survey instruments.
  79. field intensity The irradiance of an electromagnetic wave under specified conditions. Note: Field intensity is usually expressed in watts per square meter.
  80. Field of View (FOV) The angular measure of the volume of space within which the system can respond to the presence of a target.
  81. Field Research The gathering and research of information at the physical location; as opposed to research or information gathering in the office.
  82. field strength 1. The magnitude of an electric, magnetic, or electromagnetic field at a given point.
  83. field tag Synonym flag.
  84. field weight The relative importance of a text field in a search index. Field weights control how much matches in particular text fields affect a document's relevance…
  85. field wire A flexible insulated wire used in field telephone and telegraph systems. Note 1: WD-1 and WF-16 are types of field wire.
  86. field-disturbance sensor A restricted radiation device which establishes a radio frequency field in its vicinity and detects changes in that field resulting from the movement of…
  87. field-replaceable unit (FRU) Any hardware unit that can be replaced at the customer site.
  88. fielded search A query that is restricted to a particular field.
  89. FIFO First In, First Out. See also "LIFO". Also, a nickname for a "named pipe".
  90. FIFO (first in, first out) The (FIFO) semantics of a queue data structure. Items are removed in the order in which they arrived in the queue, so older items are always removed…
  91. Fighting Mirror (FMIR) Part of the GBL System. The low orbit mirror, which receives laser energy and reflects it to the target.
  92. Figure of Merit (FOM) The numerical value assigned to a measure of effectiveness, parameters, or other figure, as a result of an analysis, synthesis, or estimating technique.
  93. file To place a paper in the official custody of the clerk of court/court administrator to enter into the files or records of a case.
  94. file ACL class The property of a file indicating access permissions for a process related to the process' user or group identification.
  95. file allocation table (FAT) Common file format of file cataloging for DOS and Windows operating systems; physical method of storing and accessing files from a hard disk.
  96. File and Registry Virtualization A feature that allows standard users to run applications that normally write to per-computer files and registry keys.
  97. file archive Synonym FTP archive.
  98. file break Termination of a file at regular periodic intervals to facilitate continuous disposal or transfer of the file series.
  99. file classification system A logical and systematic arrangement for classifying records into subject groups or categories based on some definite scheme of natural relationships…
  100. File Conversion Changing data or a file from one format to another. For example, Native files may be converted from their original source format (e.g.