Technology terms starting with D

1,369 terms

DDG USN guided missile destroyer. 74
DDL Disclosure authority letter.
DDN Defense Data Network.
DDP Document-driven programming. The use of XML to define applications.
DDR&E Director, Defense Research and Engineering.
DDS A rare disorder that causes kidney failure before age 3, abnormal development of the sexual organs, and, in most cases, Wilms tumor (a type of kidney…
De Buff - A negative spell cast on a unit that makes it less powerful. An example of a "de-buff" is Slow.
De Morgan's Theorem Two rules that can help to simplify boolean expressions involving multiple logical-not operators in combination with other boolean operators.
De-Listing The removal of pages from a search engine's index. Removal can occur for various reasons, including unreliability of the machine that hosts a site or…
de-stuffing The controlled deletion of stuffing bits from a stuffed digital signal, to recover the original signal.
DEA key A 64-bit parameter consisting of 56 independent bits and 8 parity bits operating in concert as a data encryption algorithm key. [After X9.52]
Dead Link An internet link which doesn't lead to a page or site, probably because the server is down or the page has moved or no longer exists.
dead sector In facsimile, the interval between (a) the end of scanning of one object line and (b) the start of scanning of the following line.
dead space The area, zone, or volume of space that is within the expected range of a radio, radar, or other transmitted signal but in which the signal is not…
deadlock A situation that arises when two threads each acquires the lock to one of a set of resources that they both need.
Dealer Numbering Pools Numbers allocated by a service provider to a retail dealer for use in the sale and establishment of service on behalf of that service provider.
DEBRA Debris, Radiance Model.
debug To detect, trace, and eliminate mistakes.
Decentralized Control In air defense, the normal mode whereby a higher echelon monitors unit actions, making direct target assignments to units only when necessary to ensure…
Decentralized Execution The distributed and integrated implementation of USCINCSPACE direction by the BMD forces. (AFSPACECOM)
decentralized files Files scattered throughout an organization; not centralized. Usually contains records that are generated and used by a single organizational unit and…
deception See electronic deception.
deception repeater A device that can (a) receive a signal, (b) amplify, delay, or otherwise manipulate the signal, and (c) retransmit it solely for creating deception.
decertification [In security, the] Revocation of the certification of an information-system (IS) item or equipment for cause. [INFOSEC-99]
Decibel A unit for expressing the relative intensity of sounds on a scale from zero for the average least perceptible sound to about 130 for the average level at…
decimal Number representation in base 10. In base 10, the digits 0 to 9 are used. Digit positions represent successive powers of 10.
decimal-numeric A numeric system for classifying records by subject in units of 10 and coded for arrangement in numeric order Note: An unlimited number of subdivisions…
decipher [To] convert enciphered text to the equivalent plain text by means of a cryptographic system.
Decipherment The reversal of a corresponding reversible encipherment [7498-2]
Decision The opinion of the court in concluding a case at law.
decision circuit A circuit that measures the probable value of a signal element and makes an output signal decision based on the value of the input signal and a…
decision instant In the reception of a digital signal, the instant at which a decision is made by a receiving device as to the probable value of a signal condition.
Deck A deck is a collection of one or more WML cards that can be downloaded, to a mobile phone, as a single entity.
declaration a document in which an applicant for patent declares, under penalty of fine or imprisonment, or both (18 USC 1001), that (1) he or she is the original or…
declaration and initialization A statement in which a variable is declared and immediately given its initial value.
declarative security Mechanisms used in an application that are expressed in a declarative syntax in a deployment descriptor.
decode To convert data by reversing the effect of previous encoding. 2. To interpret a code. 3. [To] convert encoded text into plain text by means of a code.
decollimation In a beam with the minimum possible ray divergence or convergence, any mechanism by which rays are caused to diverge or converge from parallelism.
Decommissionin g The removal or the rendering useless of obsolete or no longer needed components of the BMD system from service.
Decommissioning The process of removing a power plant, apparatus, equipment, building, or facility from operation.
decompression The reversal of the procedure conducted by the compression algorithm, which reversal returns [expands] the data to its original size and condition.
Decrement A directed funding level reduction for an acquisition program.
decrement operator An operator (--) that adds one to its operand. It has two forms: pre-decrement (--x) and post-decrement (x--).
decrypt To convert encrypted content back into its original form.
Decryption Transformation of encrypted (or scrambled) data back to original form.
DED Data Element Definition (Computer term).
dedicated circuit A circuit designated for exclusive use by specified users. Note: DOD normally considers a dedicated circuit to be between two users only.
Dedicated Instance An instance that is physically isolated at the host hardware level and launched within a VPC.
dedicated mode An information-system (IS) security mode of operation wherein each user with direct or indirect access to the system, its peripherals, remote terminals…
Dedicated Mode of Operation (ADP Security) A mode of operation where all users of the AIS possess the required personnel security clearance or authorization, formal access approval (if required)…
dedicated security mode A system operating in this mode is one whose users are all cleared for, need to know about and have access to all the data stored on and/or processed by…
Dedicated Server Server which is limited to serving one website or a small collection of websites owned by a single person.
dedicated service In a communications system, a specified set of functions provided to designated users.
dedicated service link connection A link connection that is for the exclusive use of a single service customer. [T1.263-1998]
deed of gift A type of disposition agreement in which documentary material is donated (and legal custody transferred) to NARA by an individual, family, or organization.
deemphasis In FM transmission, the process of restoring (after detection) the amplitude-vs.-frequency characteristics of the signal.
deep copy A copy of an object in which copies of all the object's sub-components are also made. The resulting object might, in effect, be a clone of the original.
Deep Link A link which points to an internal page within a website. When links grow naturally typically most high quality websites have many links pointing at…
Deep Link Ratio The ratio of links pointing to internal pages to overall links pointing at a website.
deep linking In hypertext systems, such as the World Wide Web, bypassing the main (home) page and linking directly to a subordinate page.
Deep navigators A type of dynamic drill-down navigator which applies on-the-fly aggregation of result values across the entire result set for a query. See also Navigator
deep space Space at distances from the Earth equal to or greater than 2 × 106 kilometers. [NTIA] [RR]
Deep Space (DS) The region of outer space at altitudes greater than 3,000 nautical miles (about 5,600 kilometers) above the earths surface.
Deep submitting submitting URLs of pages deep in your site to the search engines. For example, if a webmaster of 200-page website submits each of those 200 pages.
deeply depressed cladding fiber An optical fiber construction, usually a single-mode fiber, that has an outer cladding of approximately the same refractive index as the core, and an…
DEF (1) Defense. (2) Demilitarization Enterprise Fund.
Default Default occurs when a debtor is unable to meet the legal obligation of debt repayment, one form of which is the failure to promptly pay interest or…
default ACL An ACL which is used in determining the initial discretionary access control information for objects created within a directory [POSIX.6].
default address list An address list that is automatically created based on the values of specific attributes of Active Directory objects.
default deny The default result from a policy in the absence of an allow or explicit deny.
default initial value The default value of any variable not explicitly initialized when it is declared.
default label The destination for all values used in a switch statement expression that do not have explicit case labels. A default label is optional.
default value formula The formula that lets you set an initial value for an editable field.
default version The version selected when a particular version is not specified.
default view The view displayed the first time you open an application.
DEFCON Defense Readiness Conditions.
Defended area coverage Defended Asset List (DAL) The geographical region that the BMDS can protect from ballistic missile attacks with a specified level of probability of negation.
Defended Asset List (DAL) A ranked listing of facilities, forces, and national political items that require protection from attack or hostile surveillance.
Defense Acquisition Board (DAB) The senior DoD acquisition review board chaired by the Under Secretary of Defense for Acquisition.
Defense Acquisition Board Committee Advisory review groups subordinate to the Defense Acquisition Board. The Under Secretary of Defense for Acquisition determines the number of Committees.
Defense Acquisition Executive (DAE) The principal advisor to the Secretary of Defense on all matters pertaining to the Department of Defense Acquisition System.
Defense Acquisition Executive Summary (DAES) The DAEs principal mechanism for tracking programs between milestone reviews. Includes programs subject to the Selected Acquisition Report (SAR), and any…
Defense Communications System (DCS) Department of Defense long-haul voice, data, and record traffic system which includes the Defense Data Network, Defense Satellite Communications Systems…
Defense Data Network (DDN) A component of the Defense Communications System used for switching Department of Defense automated data processing systems. [JP 1-02]
Defense Employment Option (DEO) Engagement strategy provided to USSPACECOM component forces to achieve specific military objectives against a ballistic missile attack.
Defense Enterprise Program (DEP) An Acquisition program designed to streamline the acquisition process by waiver of selected regulatory requirements.
Defense In-Depth Locating mutually supportive defense positions in such a manner as to absorb and progressively weaken an attack, prevent initial observations of the…
Defense Meteorological Satellite Program (DMSP) Satellites designed to meet unique military requirements for weather information.
Defense Planning and Resources Board (DPRB) A board, chaired by the Deputy Secretary of Defense, established to facilitate decision making during all phases of the planning, programming, and…
Defense Planning Guidance (DPG) Document issued by SECDEF to DoD components providing strategic framework for developing the Service POMs.
Defense Priority and Allocation System (DPAS) The implementation of a statutory requirement where contracts in support of national defense must be accepted and performed on a priority basis over all…
Defense Readiness Conditions (DEFCON) A uniform system of progressive alert postures for use between the Chairman of the Joint Chiefs of Staff and the commanders of unified and specified…
Defense Satellite (DSAT) Weapon A device that is intended to defend satellites by destroying attacking ASAT weapons.
Defense Satellite Communications Systems (DSCS) Advanced communications satellites in synchronous orbit around the earth. Provides high-capacity, super high-frequency (SHF) secure voice and data links…
Defense Support Program (DSP) A system of satellites in geo-stationary orbits, fixed and mobile ground processing stations, one multi-purpose facility, and a ground communications…
Defense Suppression Temporary or transient degradation of the performance of a defensive system below the level needed to fulfill its mission objectives, by an opposing force.
Defense Switched Network (DSN) A component of the Defense Communications System that handles Department of Defense voice, data, and video communications.
Defense Tier The arranging of a defensive system to correlate with the phases of a ballistic missile trajectory; i.e., boost, post-boost, midcourse, and terminal.
Defensive Counter Measures (DCM) Actions taken to eliminate an ASAT attack.
Defensive Technologies Study Team (DTST) A committee, generally known as the Fletcher Panel after its Chairman, appointed by (former) President Reagan to investigate the technologies of potential…