sweep acquisitionA technique whereby the frequency of the local oscillator is slowly swept past the reference in order to assure that the pull-in range is reached.
Sweep JammingA narrow band of jamming that is back and forth over a relatively wide operating band of frequencies.
swimSlow, graceful, undesired movements of display elements, groups, or images about their mean position on a display surface, such as that of a monitor.
SwingThe Swing classes are part of a wider collection known as the Java Foundation Classes (JFC). Swing classes are defined in the javax.swing packages.
switchA Java keyword used to evaluate a variable that can later be matched with a value specified by the case keyword in order to execute a group of statements.
switch busy hourIn telephony, the busy hour for a single switch.
switch clusterThe combination of multiple command-line switches (e.g., -a -b -c) into one switch (e.g., -abc).
switch statementA selection statement in which the value of an arithmetic expression {expression!arithmetic} is compared for a match against different case labels.
switchboardEquipment used for manual switching operations.
switched access lineA communication path between local exchange and a customer interface (CI). [T1.401-1988]
switched circuitIn a communications network, a circuit that may be temporarily established at the request of one or more of the connected stations.
Switched Digital Acceptance Testing (SDAT)Describes acceptance testing procedures used when Switched Access Services are provided with a digital switch on digital facilities.
switched exchange access networkThe network of switching systems, interconnecting facilities, and equipment provided by an exchange carrier (EC) to provide telecommunications services…
switched loopIn telephony, a circuit that automatically releases a connection from a console or switchboard, once the connection has been made to the appropriate…
switched multimegabit data services (SMDS)A connectionless, broadband, packet-switched data service that provides LAN-like performance and features in metropolitan or wide areas.
switched networkA communications network, such as the public switched telephone network, in which any user may be connected to any other user through the use of message…
switched virtual circuit (SVC)An ATM network connection established through signaling. The user defines the endpoints when the call is initiated.
switchingThe controlling or routing of signals in circuits to execute logical or arithmetic operations or to transmit data between specific points in a network.
switching centerIn communications systems, a facility in which switches are used to interconnect communications circuits on a circuit-, message-, or packet-switching…
syllabary[A] list of individual letters, combination of letters, or syllables, with their equivalent code groups, used for spelling out words or proper names not…
syllableA character string or a bit string in a word.
symbolA graphic pattern used to represent a feature. For example, line symbols represent arc features; marker symbols, points; shades symbols, polygons; and…
symbol environmentDefines the types of map symbols and their characteristics during a graphic display session in ARC/INFO.
symbol tableWhere a "compiler" remembers symbols. A program like Perl must somehow remember all the names of all the variables, filehandles, and subroutines you've…
symbolic debuggerA program that lets you step through the execution of your program, stopping or printing things out here and there to see whether anything has gone wrong…
symbolic languageA computer programming language used to express addresses and instructions with symbols convenient to humans rather than to machines.
symbolic linkAn alternate filename that points to the real "filename", which in turn points to the real "file".
symbolic logicThe discipline in which valid arguments and operations are dealt with using an artificial language designed to avoid the ambiguities and logical…
symbolic referenceA variable whose value is the name of another variable or subroutine. By dereferencing the first variable, you can get at the second one.
SymCLIThe Symmetrix command line interface used to configure and manage EMC Symmetrix disk arrays.
symlinkA file system object that can be used to redirect a path transparently to another part of the file system. Also known as "symbolic link" or "soft link."
symmetric authentication methodMethod for demonstrating knowledge of a secret, in which both entities share a common authentication information [10181-2].
symmetric cryptographyCryptography in which the same key is used for encryption and decryption. [2382-pt.8]
symmetric encryptionA common key and mathematical algorithm used to both encrypt and decrypt a message.
Symmetric KeyA cryptographic key that is used to perform both the cryptographic operation and its inverse, for example to encrypt and decrypt, or create a message…
symmetric propertyIf a property P is symmetric, and the property relates individual a to individual b then individual b is also related to individual a via property P.
symmetrical channelA channel in which the send and receive circuits have the same data signaling rate.
symmetrical pairA balanced transmission line, in a multipair cable, having equal conductor resistances per unit length, equal impedances from each conductor to earth, and…
symmetryThe attribute describing the relationship of information flow between two (or more) access points or reference points involved in a communication.
synchronismThe state of being synchronous. 2. For repetitive events with the same, multiple, or submultiple repetition rates, a relationship among the events such…
SynchronizationFor data streams, the process whereby a received set of data is placed in one to one correspondence with the data assumed to have been transmitted.
synchronization bitA bit used to achieve or maintain synchronism. Note: The term "synchronization bit" is usually applied to digital data streams, whereas the term…
synchronization codeIn digital systems, a sequence of bits introduced into a transmitted signal to achieve or maintain synchronism.
synchronization pulseA pulse used to achieve or maintain synchronism. Note: The term "synchronization pulse" is usually applied to analog signals, whereas the term…
synchronizedA keyword in the Java programming language that, when applied to a method or code block, guarantees that at most one thread at a time executes that code.
synchronized statementA statement in which an object-lock must be obtained for the target object before the body of the statement can be entered.
synchronizingAchieving and maintaining synchronism. 2. In facsimile, achieving and maintaining predetermined speed relations between the scanning spot and the…
synchronizing pilotIn FDM, a reference frequency used for achieving and maintaining syntonization of the oscillators of a carrier system or for comparing the frequencies or…
synchronizing signalIn facsimile systems, the signal that maintains predetermined speed relations between the scanning spot and recording spot within each facsimile scanning…
synchronousProgramming in which the orderly sequence of events can be determined; that is, when things happen one after the other, not at the same time.
synchronous crypto-operation[A] method of on-line crypto-operation in which crypto-equipment and associated terminals have timing systems to keep them in step. [INFOSEC-99]
synchronous data networkA data network in which synchronism is achieved and maintained between data circuit-terminating equipment (DCE) and the data switching exchange (DSE), and…
synchronous data replicationEach data replication I/O waits for the preceding I/O to complete before beginning another replication.
synchronous idle character (SYN)A transmission control character used in synchronous transmission systems to provide a signal from which synchronism or synchronous correction may be…
synchronous networkA network in which clocks are controlled to run, ideally, at identical rates, or at the same mean rate with a fixed relative phase displacement, within a…
synchronous orbitAny orbit in which an orbiting object has a period equal to the average rotational period of the body being orbited, and in the same direction of rotation…
synchronous payloadsPayloads derivable from a network transmission signal by removing integral numbers of bits in every frame, i.e.
Synchronous ReplicationIn synchronous replication, each write to the primary disk and the secondary (remote) disk must be complete before the next write can begin.
synchronous systemA system in which events, such as signals, occur in synchronism. Note 1: An example of a synchronous system is one in which a transmitter and receiver…
synchronous tandem encodingA transcoding of the form ADPCM-PCM-ADPCM (adaptive differential pulse code modulation-pulse code modulation-adaptive differential pulse code modulation)…
synchronous TDMA multiplexing scheme in which timing is obtained from a clock that controls both the multiplexer and the channel source.
Synchronous Test Line (103)The term "Synchronous Test Line" denotes an arrangement in an end office which performs marginal operational tests of supervisory and ring-tripping…
synchronous transfer modeIn a Broadband Integrated Services Digital Network (B-ISDN), a proposed transport level technique in which time-division multiplexing and switching is to…
synchronous transmissionDigital transmission in which the time interval between any two similar significant instants in the overall bit stream is always an integral number of…
synchronous transport signal level 1 (STS-1)The basic logical building block signal of synchronous optical networks (SONET). The STS-1 signal has a bit rate of 51.840 Mb/s. [T1.X1] [After T1.
SyndicationAn option that allows you to extend your reach by distributing ads to additional partner sites.
synonym dictionaryA dictionary that enables users to search for synonyms of their query terms when they search a collection.
Synonym expansionWhen a query or document is expanded with a defined list of synonyms for the words it originally contains.
Syntactic analysisUsed to analyze query through entity/phrase extraction, anti-phrasing, and to remove word-sense ambiguity (the color orange versus the fruit, for example).
syntactic sugarAn alternative way of writing something more easily; a shortcut.
Syntactical patternsUsed for detecting information entities such as people, places, product codes, and prices.