ASPADOCThe backup to the SPADOC, maintained by the Naval Space Command, at Dahlgren, VA, collocated with the NAVSPOC and NAVSPASUR.
aspectThe compass direction toward which a slope faces, measured in degrees from North in a clockwise direction.
Aspect RatioThe relationship of the height and width of any image. The aspect ratio of an image must be maintained to prevent distortion.
ASPI (Advanced SCSI Programming Interface)A standard SCSI software interface that acts as a liaison between host adapters and SCSI device drivers, and allows them to share a single hardware…
ASPI ManagerA software module that provides an interface between ASPI modules, a host adapter board, and the SCSI devices connected to the adapter.
ASPI ModuleDevice-level code specific to a particular kind of SCSI device that communicates with the ASPI manager.
assembly timeThe elapsed time taken for the execution of an assembler.
ASSERTTo assert a patent is to attempt to enforce it. To attempt to prevent an unlicensed party from practicing an invention.
asserted hierarchyThe 'manually constructed' class hierarchy in an ontology; as opposed to the inferred hierarchy that is generated by a reasoner.
assertionA component of a "regular expression" that must be true for the pattern to match but does not necessarily match any characters itself.
assertion failureType of failure that occurs when a program encounters a line of code that tells the program to panic.
AssessmentCharges levied against a property for tax purposes or to pay for municipal or association improvements such as curbs, sewers, or grounds maintenance.
Assessment MethodA focused activity or action employed by an assessor for evaluating a particular attribute of a security control.
Assessment ProcedureA set of activities or actions employed by an assessor to determine the extent to which a security control is implemented correctly, operating as…
AssetAnything owned that has value; any interest in real property or personal property that can be used for payment of debts.
assigned frequencyThe center of the assigned frequency band assigned to a station. [RR] 2. The frequency of the center of the radiated bandwidth.
assigned frequency bandThe frequency band within which the emission of a station is authorized; the width of the band equals the necessary bandwidth plus twice the absolute…
Assigned Numbers:Assigned numbers are numbers working in the PSTN under an agreement such as a contract or tariff at the request of specific end users or customers for…
AssignmentAssignment occurs when someone who has written, or sold, a listed option receives a notice that the option has been exercised and he or she must fulfill…
assignment operatorThe operator (=) used to store the value of an expression into a variable, for instance variable = expression; The right-hand-side is completely evaluated…
ASSISTAutomated Systems Security Incident Support Term (DISA term).
associated common-channel signalingCommon-channel signaling in which the signal channel is associated with a specific trunk group and terminates at the same pair of switches as the trunk…
associated mode of signalingThe mode in which messages for a signaling relation involving two adjacent signaling points are conveyed over a directly interconnecting signaling link.
Associated ObjectObject that remains near a deployed reentry vehicle, decoy or chaff puff.
associative storageA storage device whose storage locations are identified by their contents, or by a part of their contents, rather than by their names or positions.
associativityDetermines whether you do the left "operator" first or the right "operator" first when you have "A "operator" B "operator" C" and the two operators are of…
Assume Course OrientationMake course attitude adjustments to the weapon platform orientation prior to engagement.
AssuranceOne of the five Security Goals. It involves support for our confidence that the other four security goals (integrity, availability, confidentiality, and…
Assured DefenseStrategies and tactics that result in (specified) a high probability of kill against designated targets, regardless of the interceptors required.
Assured KillThis option requires defense segments to employ tactics, which produce the highest probability of kill consistent with the available number of defensive…
AST(1) See Airborne Surveillance Testbed . (2) Advanced Sensor Technology.
asymmetric compressionA data compression technique that requires more processing capability to compress than to decompress.
asymmetric cryptographic algorithmA cryptographic formula that uses two related keys-a public key and a private key-each of which has the characteristic algorithm that, given the public…
asymmetric digital subscriber line (ADSL)An access technology that allows voice and high-speed data to be sent simultaneously over local exchange service copper facilities; the technology…
asymmetric encryptionAn encryption system that utilizes two keys, one called a public key (which is known to both the sender and the recipient of encrypted data), and the…
Asymmetric KeysTwo related keys, a public key and a private key that are used to perform complementary operations, such as encryption and decryption or signature…
Asymmetric Multi-ProcessingMulti-processing using two or more processors that are not equivalent in their capabilities and their use.
asymmetrical clusterA cluster that has more nodes at one site than at another. For example, an asymmetrical metropolitan cluster may have two nodes in one building, and three…
asynchronousSaid of events or activities whose relative temporal ordering is indeterminate because too many things are going on at once.
asynchronous communications systemA data communications system that uses asynchronous operation. Note: The time spacing between successive data characters or blocks may be of arbitrary…
asynchronous data replicationLocal I/O will complete without waiting for the replicated I/O to complete; however, it is expected that asynchronous data replication will process the…
Asynchronous Data TransferA method of SCSI data transfer which is not synchronized to a set timing interval.
asynchronous multiplexed transmission systemA multiplexed transmission system in which the rates of the carrier and its tributaries are not traceable to the same master clocking source.
asynchronous networkA network in which the clocks do not need to be synchronous or mesochronous. Synonym nonsynchronous network.
asynchronous operationA sequence of operations in which operations are executed out of time coincidence with any event. 2.
Asynchronous ReplicationAfter data has been written to the primary storage site, new writes to that site can be accepted, without having to wait for the secondary (remote)…
asynchronous transfer mode (ATM)A network technology that combines the features of cell-switching and multiplexing to offer reliable and efficient network services.
asynchronous transmissionData transmission in which the instant that each character, or block of characters, starts is arbitrary; once started, the time of occurrence of each…
ATM switch (asynchronous transfer mode switch)With reference to both analog and digital interfaces, the ATM functional unit and technology that operates with analog 2-wire interfaces and standard…