Technology terms starting with A

1,579 terms

  1. ALCE Airlift Coordination Element (JFACC term).
  2. ALCM Air Launched Cruise Missile.
  3. ALCOR ARPA/Lincoln C-band observable radar. (USAKA KREMS)
  4. ALDC (Advanced Lossless Data Compression) a data compression algorithm that provides substantially greater compression efficiency than IDRC or DLZ. See IDRC.
  5. ALDT Average Logistics Delay Time.
  6. ALE Airborne Laser Experiment.
  7. ALERT Automated Local Event Reporting in Real Time. Network of automatic raingauges that transmit via VHF radio link when precipitation occurs.
  8. Alert engine A matching engine which performs matching of incoming documents against stored queries (triggers). A match generates an alert.
  9. Alert query An alert query is the set of filtering conditions an end-user or external application sends to the Alert Engine.
  10. alerting signal A signal used by the network to indicate the presence of an incoming call. It consists of a ringing signal periodically interrupted by silent (no ringing…
  11. Alerts To notify users of changes to existing information or new information add an alert to track new matches to search queries, changes to content in an area…
  12. Alexa Amazon.com owned search service which measures website traffic. Alexa is heavily biased toward sites that focus on marketing and webmaster communities.
  13. ALG Along
  14. Algorithm A detailed formula or set of steps for solving a particular problem. To be an algorithm, a set of rules must be unambiguous and have a clear stopping…
  15. algorithm identifier In encryption, a unique identifier or recognizer for a given encryption or hash algorithm, together with any required parameters. [After X9.31-1]
  16. algorithmic language An artificial language established for expressing a given class of algorithms.
  17. ALI (1) Alpha/LAMP Integration. (2) AEGIS Leap Intercept
  18. alias Called by another name.
  19. alias point code A Signaling System No. 7 (SS7) address that is shared by more than one system supporting the same GTT (global title translation) function (or other SS7…
  20. aliases Multiple references to a single object. Messages may be sent to the object via any of its aliases. A resulting state change will be detectable by all.
  21. ALIASING When computer graphics output has jagged edges or a stair-stepped, rather than a smooth, appearance when magnified.
  22. Aliasing (redirecting) Using a fictitious address with which to send and receive e-mail. Typically done to avoid having people write to long "real" e-mail addresses or if…
  23. aligned bundle A bundle of optical fibers in which the relative spatial coordinates of each fiber are the same at the two ends of the bundle.
  24. alignment error rate monitoring A procedure by which the error rate of a signaling link is measured during the initial alignment process. [After T1.110.2-1992] [After T1.226-1992]
  25. alignment jitter The short-term variations between the optimum sampling instants of a digital signal and the sampling clock derived from it. [T1.Rpt17-1993]
  26. ALIRT Advanced Large-area Infrared Transducer
  27. ALL A fast-growing type of leukemia (blood cancer) in which too many lymphoblasts (immature white blood cells) are found in the blood and bone marrow.
  28. all trunks busy (ATB) An equipment condition in which all trunks (paths) in a given trunk group are busy.
  29. all-glass fiber Synonym all-silica fiber.
  30. all-silica fiber An optical fiber composed of a silica-based core and cladding. Note: The presence of a protective polymer overcoat does not disqualify a fiber as an…
  31. Allan variance One half of the time average over the sum of the squares of the differences between successive readings of the frequency deviation sampled over the…
  32. allcall In adaptive high-frequency (HF) radio automatic link establishment (ALE), a general broadcast that does not request responses and does not designate any…
  33. Allocated Availability Requirement The requirement probability that an element is available to perform its function as allocated by the SDS.
  34. Allocation (1) An authorization by a designated official of a DoD component making funds available within a prescribed amount to an operating agency for the purpose…
  35. allocation (of a frequency band) Entry in the Table of Frequency Allocations of a given frequency band for the purpose of its use by one or more (terrestrial or space) radiocommunication…
  36. Allotment An area of land where one or more livestock operators graze their livestock. Allotments generally consist of BLM lands but may also include other…
  37. allotment (of a radio frequency or radio frequency channel) Entry of a designated frequency channel in an agreed plan, adopted by a component Conference, for use by one or more administrations for a (terrestrial or…
  38. allow An allow results from a statement that has effect=allow, assuming any stated conditions are met. Example: Allow requests received before 1:00 p.m.
  39. Allow phrase A custom word or phrase that the administrator sets for the Content Filter agent to enable the processing of e-mail messages to Exchange Server 2007…
  40. AllTheWeb Search engine which was created by Fast, then bought by Overture, which was bought by Yahoo.
  41. ALO Alpha Laser Optimization.
  42. ALOD Adaptive Locally Optimum Detector (Navy term).
  43. Alpha Particle A positively charged particle, indistinguishable from a helium atom nucleus and consisting of two protons and two neutrons.
  44. alpha profile See power-law index profile.
  45. alphabet An ordered set of all the letters used in a language, including letters with diacritical signs where appropriate, but not including punctuation marks. 2.
  46. alphabet translation Deprecated synonym for alphabet transliteration. See alphabet transliteration.
  47. alphabet transliteration The substitution of the characters of one alphabet for the corresponding characters of a different alphabet, usually accomplished on a…
  48. alphabetic character set A character set that contains letters and may contain control characters, special characters, and the yyspace character, but not digits.
  49. alphabetic code A code according to which data are represented through the use of an alphabetic character set.
  50. alphabetic filing system A filing system in which files and documents are arranged in alphabetic order from A to Z See also numeric filing system.
  51. alphabetic string A string consisting solely of letters from the same alphabet. 2. A character string consisting solely of letters and associated special characters from…
  52. alphabetic word A word consisting solely of letters from the same alphabet. 2. A word that consists of letters and associated special characters, but not digits.
  53. alphanumeric Characters composed of letters, numbers (and sometimes punctuation marks). Excludes control characters.
  54. alphanumeric character set A character set that contains both letters and digits, special characters, and the yyspace character.
  55. alphanumeric code A code derived from an alphanumeric character set. 2. A code that, when used, results in a code set that consists of alphanumeric characters.
  56. alphanumeric data Data represented by letters, digits, and sometimes by special characters and the yyspace character.
  57. ALPS Accidental Launch Protection System.
  58. ALS Advanced Launch System.
  59. ALSP Aggregate Level Simulation Protocol.
  60. Alt A character on your account other than your main character.
  61. Alt Attribute Blind people and most major search engines are not able to easily distinguish what is in an image.
  62. Alt tags Alt tags alternate text associated with a web page graphic that gets displayed when the Internet user hovers the mouse over the graphic.
  63. AltAir Project name for the feasibility demonstration of a short range, air drop, ballistic missile target, dropped from a C-130 cargo aircraft. 16
  64. AltaVista Search engine bought out by Overture prior to Overture being bought by Yahoo. AltaVista was an early powerhouse in search, but on October 25, 1999 they…
  65. altazimuth mount A mounting, e.g., for a directional antenna, in which slewing takes place in (a) the plane tangent to the surface of the Earth or other frame of reference…
  66. Alteration Any change involving an erasure or rewriting in the date, amount, or payee of a check or other negotiable instrument.
  67. alternate access provider A company that enters a market area as a competitive service provider (CAP) to provide exchange service in competition with one or more existing exchange…
  68. alternate carrier routing (ACR) A special advanced intelligent network (AIN) feature supporting Government Emergency Telecommunications Service (GETS) calls.
  69. alternate mail A mail system other than Lotus Notes mail.
  70. alternate mark inversion (AMI) signal A pseudoternary signal, representing binary digits, in which (a) successive "marks" are of alternately positive and negative polarity and the absolute…
  71. Alternate National Military Command Center (ANMCC) An element of the National Military Command System (NMCS), which serves as an alternate to the NMCC. Located at Ft. Ritchie, MD.
  72. alternate party In multilevel precedence and preemption, the call receiver, i.e., the destination user, to which a precedence call will be diverted.
  73. Alternate Processing and Correlation Center (APCC) NORAD capability in USSTRATCOM Command Post that receives, processes, and analyzes TW/AA information.
  74. alternate route A second or subsequent choice path between two points. [T1.Rpt24-1993]
  75. alternate routing The routing of a call or message over a substitute route when a primary route is unavailable for immediate use. 2.
  76. Alternate Space Defense Operations Center (ASPADOC) The backup to the SPADOC, maintained by the Naval Space Command, at Dahlgren, VA, collocated with the NAVSPOC and NAVSPASUR.
  77. alternating mode Synonym half-duplex (HDX) operation.
  78. alternative routing In signaling, the process of allocating substitute routes for a given signaling traffic stream in case of failure(s) affecting the signaling links or…
  79. Alternatives Courses of action that may meet the objectives of a proposal at varying levels of accomplishment, including the most likely future conditions without the…
  80. altitude of the apogee or of the perigee The altitude of the apogee or perigee above a specified reference surface serving to represent the surface of the Earth.
  81. ALU Arithmetic Logic Unit.
  82. AM area manager.
  83. AMA adaptive management area.
  84. amateur service A radiocommunication service for the purpose of self-training, intercommunication and technical investigation carried out by amateurs, that is, by duly…
  85. amateur station A station in the amateur service. [NTIA] [RR]
  86. amateur-satellite service A radiocommunication service using space stations on Earth satellites for the same purposes as those of the amateur service. [NTIA] [RR]
  87. Amazon CloudWatch A web service that enables you to monitor and manage various metrics, and configure alarm actions based on data from those metrics. See Also http://aws.
  88. Amazon EBS-backed AMI Instances launched from this type of AMI use an Amazon EBS volume as their root device.
  89. Amazon EC2 VM Import Connector See http://aws.amazon.com/ec2/vmimport.
  90. Amazon Elastic Block Store (EBS) A service that provides block level storage volumes for use with EC2 instances. See Also http://aws.amazon.com/ebs.
  91. Amazon Elastic Compute Cloud (EC2) A web service that enables you to launch and manage Linux/UNIX and Windows server instances in Amazon's data centers. See Also http://aws.amazon.com/ec2.
  92. Amazon Elastic MapReduce A web service that makes it easy to process large amounts of data efficiently. Amazon EMR uses Hadoop processing combined with several AWS products to do…
  93. Amazon Machine Image (AMI) An encrypted machine image stored in Amazon Elastic Block Store or Amazon Simple Storage Service. AMIs are like a template of a computer's root drive.
  94. Amazon Payments See http://payments.amazon.com.
  95. Amazon Relational Database Service (RDS) A web service that makes it easier to set up, operate, and scale a relational database in the cloud.
  96. Amazon Resource Name (ARN) A standardized way to refer to an AWS resource. For example: arn:aws:iam::123456789012:user/division_abc/subdivision_xyz/Bob.
  97. Amazon Route 53 A web service you can use to create a new DNS service or to migrate your existing DNS service to the cloud. See Also http //aws.amazon.com/route53.
  98. Amazon S3-Backed AMI Instances launched from this type of AMI use the instance store as their root device.
  99. Amazon Simple Notification Service (SNS) A web service that enables applications, end-users, and devices to instantly send and receive notifications from the cloud. See Also http://aws.amazon.
  100. Amazon Simple Queue Service (SQS) Reliable and scalable hosted queues for storing messages as they travel between computers. See Also http://aws.amazon.com/sqs.