Technology terms starting with D

1,369 terms

  1. dublin core an international metadata standard consisting of a 15-element set to describe a wide range of resources about the creation of a document.
  2. duct 1. In interfacility cabling, a conduit, which may be direct-earth buried or encased in concrete, used to enclose communications or power cables.
  3. ducting The propagation of radio waves within an atmospheric duct.
  4. Due Care The responsibility that managers and their organizations have a duty to provide for information security to ensure that the type of control, the cost of…
  5. dumb terminal An asynchronous terminal that (a) does not use a transmission control protocol and (b) sends or receives data sequentially one character at a time.
  6. dummy load A dissipative impedance-matched network, usually used at the end of a transmission line to absorb all incident energy.
  7. dump Noun. A backup to tape, created using the Data ONTAP dump command.
  8. dump path A path that specifies one volume, qtree, or subtree to back up.
  9. DUNDEE Down Under Early Warning Experiment (MDA/DSTO term).
  10. duobinary signal A pseudobinary-coded signal in which a "0" ("zero") bit is represented by a zero-level electric current or voltage; a "1" ("one") bit is represented by a…
  11. Duplex A dwelling divided into two units.
  12. duplex cable A fiber-optic cable that contains two optical fibers. [After FAA]
  13. duplex circuit A circuit that permits transmission in both directions. Note: For simultaneous two-way transmission, see full-duplex circuit.
  14. duplex operation Operating method in which transmission is possible simultaneously, in both directions of a telecommunication channel.
  15. duplex-numeric A coding system using numbers with two or more parts separated by a dash, space, or comma Note: An unlimited number of items may be included under any one…
  16. duplexer In radar systems, a device that isolates the receiver from the transmitter while permitting them to share a common antenna.
  17. duplicate 1. Pertaining to microforms, a duplicate is a working copy other than the master or security copy, which is administratively useful to an agency.
  18. Duplicate Content Content which is duplicate or near duplicate in nature. Search engines do not want to index multiple versions of similar content.
  19. Duplicate detection Search engines may apply different levels of duplicate detection. Exact duplicates means the same document, but located in different repositories.
  20. Duplicate Digital Evidence A duplicate is an accurate digital reproduction of all data objects contained on the original physical item and associated media.
  21. duplication Multiple occurrence of: 1. A DNA sequence within a defined length of DNA; or 2. A specific segment in the same chromosome or genome.
  22. durability degree to which a storage medium retains its original strength or properties, especially under conditions of heavy, sustained use See also archival…
  23. durable subscription In a JMS publish/subscribe messaging system, a subscription that continues to exist whether or not there is a current active subscriber object.
  24. Duration In simplified terms, a bond's duration measures the effect that each 1% change in interest rates will have on the bond's market value.
  25. DURIP Defense University Research Instrumentation Program.
  26. DUSD Deputy Under Secretary of Defense.
  27. DUSD (ES) Deputy Under Secretary of Defense (Environmental Security).
  28. Duty Cycle The duration and periodicity of the operation of a device.
  29. DVAL Demonstration Validation.
  30. DVD See digital versatile disc (DVD).
  31. DVD (digital versatile disc) Optical storage media that can store up to 4.7 GB of data, or the equivalent of 7 CDs, on a single-sided, single-layer disc, or up to 8.
  32. dvi Abbreviation for digital video interface. A standard for computer-generated multimedia text and graphics merged in video production.
  33. DWDM Abbreviation for dense wavelength division multiplexing.
  34. dwell time The period during which a dynamic process remains halted in order that another process may occur.
  35. dweomer An enchantment, illusion, phantasm, or jugglery. Said when Perl's magical "dwimmer" effects don't do what you expect, but rather seem to be the product of…
  36. dwimmer DWIM is an acronym for "Do What I Mean", the principle that something should just do what you want it to do without an undue amount of fuss.
  37. DX The highest rating under the DPAS. It takes preference over all other rated and not rated orders on a contractors production line.
  38. DX signaling Abbreviation for direct current signaling.
  39. DX signaling unit A duplex signaling unit that repeats "E" and "M" lead signals into a cable pair(s) via "A" and "B" leads.
  40. DXL (Domino XML) The XML representation of Domino data is known as DXL. DXL describes Domino-specific data and design elements such as embedded views, forms, and documents.
  41. Dynamic generated 'on-the-fly' from a database. Also see "database-driven."
  42. dynamic arming/disarming Enabling/disabling of a detection point by a service control function in the course of service control execution for a particular call/service attempt.
  43. Dynamic concept extraction The ability to mine concepts from data present in the result set of a query through statistical and linguistic analysis. See also Entity extraction
  44. Dynamic Content Information on web pages which changes or is changed automatically, e.g. based on database content or user information.
  45. Dynamic Data Exchange (DDE) An IAC protocol developed by Microsoft for Windows-based applications. DDE allows one application to send messages to, and get information from, other…
  46. Dynamic Disk A dynamic disk is a physical disk that provides features that basic disks do not, such as support for volumes spanning multiple disks.
  47. dynamic distribution group A distribution group that uses recipient filters and conditions to derive its membership at the time the message is sent.
  48. Dynamic Distribution List A collection of recipients, based on a Lightweight Directory Access Protocol (LDAP) query that an e-mail message can be sent to. [Exchange 2003]
  49. Dynamic drill-down A navigation tool for structured data; it provides multidimensional drill-down in structured data based on facets of content.
  50. Dynamic Host Configuration Protocol (DHCP) The protocol used to assign Internet Protocol (IP) addresses to all nodes on the network.
  51. dynamic HTML See dHTML.
  52. Dynamic Languages Programming languages such as PHP or ASP which build web pages on the fly upon request.
  53. dynamic range In a system or device, the ratio of (a) a specified maximum level of a parameter, such as power, current, voltage, or frequency to (b) the minimum…
  54. Dynamic rank The process by which rank components are computed during matching related to the level of match between document and query.
  55. dynamic ranking A type of ranking in which the terms in the query are analyzed with respect to the documents that are being searched to determine the rank of results.
  56. Dynamic RAS Connector An Exchange component that routes messages between sites on the same local area network (LAN) using the Windows NT Remote Access Service (RAS).
  57. Dynamic Rotation Delivery of ads on a rotating, random basis. Dynamic rotation allows ads to be served on different pages of the site and exposes users to a variety of ads.
  58. dynamic scoping Dynamic scoping works over a dynamic scope, making variables visible throughout the rest of the "block" in which they are first used and in any…
  59. dynamic segmentation The process of computing the locations of events on linear features at run time based on event tables for which distance measures are available.
  60. dynamic summarization A type of summarization in which the search terms are highlighted and the search results contain phrases that best represent the concepts of the document…
  61. Dynamic teaser A short summary of a document, generated based on the actual query, showing the regions of the document matching the query - with the query terms…
  62. dynamic type The dynamic type of an object is the name of the class used to construct it. See static type.
  63. dynamic variation A short-term variation (as opposed to long-term drift) in the characteristics of power delivered to electrical equipment.
  64. dynamic window control A procedure to modify the transmitter's transmit window in response to the user's perception of congestion conditions in the network. [T1.615-1992]
  65. dynamically adaptive routing In route determination for packet-switched networks, adaptive routing in which an algorithm is used that (a) automatically routes traffic around…
  66. dynamically created Web page A Web page designed to deliver content to users based on information obtained from users, from cookies, or from choices made by users as they access and…
  67. dynamically expanding virtual hard disk A virtual hard disk that grows in size each time it is modified. This type of virtual hard disk starts as a 3 KB .
  68. dynamicizer See parallel-to-serial conversion.
  69. Dynamo DB A NoSQL database service offered by Amazon that allows guaranteed throughput and low latency, making it suitable for users interested in gaming, ad tech…