scanning line lengthIn facsimile systems, the total length of a scanning line, equal to the spot speed divided by the scanning line frequency.
scanning line periodIn facsimile systems, the time interval between (a) the instant at which the scanning spot probes or writes to a given spot on one scanning line, and (b)…
scanning pitchThe distance between the centers of consecutive scanning lines.
scanning rateIn facsimile and television systems, the rate of displacement of the scanning spot along the scanning line.
scanning spotIn facsimile systems, the area on the object, i.e., the original, covered instantaneously by the pickup system of the scanner.
SCARLETSolar Concentrator Arrays with Refractive Linear Element Technology.
ScatterWhen refering to photons and light, scattering describes the phenomenon of a source absorbing, and then emanating light in all directions.
ScatteringThe process in which a beam of light is diffused or deflected by collisions with particles suspended in the atmosphere.
scattering centerIn the microstructure of a transmission medium, a site at which electromagnetic waves are scattered.
scattering coefficientThe factor that expresses the attenuation caused by scattering, e.g., of radiant or acoustic energy, during its passage through a medium.
scattering cross sectionThe area of an incident wavefront, at a reflecting surface or medium, such as an object in space, through which will pass radiant energy, that, if…
scattering lossThe part of the transmission (power) loss that results from scattering within a transmission medium or from roughness of a reflecting surface.
scavengeTo search, without authorization, through residual data to acquire sensitive information. [2382-pt.8]
scavengingSearching through object residue to acquire data. [INFOSEC-99]
SCC(1) Standing Consultative Commission (Treaty negotiation related term). (2) Space Control Center. 258
SCC (single copy cluster)A single copy cluster is a clustered Exchange deployment that uses shared storage and can have multiple active and passive servers (referred to as nodes)…
SCC (Site Consistency Checker) (aka SKCC)The updated version of the Exchange Server 5.5 Knowledge Consistency Checker (KCC) that works in conjunction with (and is part of) the Exchange Site…
Scenario EvaluationOne of the three types of performance evaluations. The primary goal of a scenario evaluation is to measure performance of a biometric system operating in…
Scenean area, object, or person external to the examining forensic laboratory facility, from which evidence is identified, documented, collected, and/or…
scene cutVideo imagery in which consecutive frames are highly uncorrelated.
scene cut responseIn video systems, the perceived impairments associated with a scene cut.
SCFA drug being studied for its ability to increase the number of stem cells in the blood. It is a type of hematopoietic cell growth factor.
schedule(SKEH-jool) In clinical trials, the step-by-step plan for how patients are to be treated; for example, the drug or type of radiation therapy that is to be…
schedulerTerm used to describe a job scheduler mechanism to which GRAM interfaces. It is a networked system for submitting, controlling, and monitoring the…
scheduler adapterThe interface used by GRAM to communicate/interact with a job scheduler mechanism. In GT 4.x, this is both the perl submission scripts and the SEG program.
Scheduler Event Generator (SEG)The Scheduler Event Generator (SEG) is a program which uses scheduler-specific monitoring modules to generate job state change events.
Scheduling AssistantAn Outlook and Outlook Web Access feature that automatically suggests the best meeting times for a given a group of attendees, allowing users to schedule…
SchemaA set of rules or conceptual model for data structure and content, such as a description of the data content and relationships in a database.
Schema cacheAn in-memory copy of the schema on the domain controller. To improve performance on schema operations (such as new object validation), each domain…
Schema MasterThe domain controller assigned to control all updates to the schema within a forest. At any time, there can be only one schema master in the forest.
Schema partitionThe schema directory partition holds the definitions for the type of data that can be held by the directory store.
schematicA diagram, drawing, or sketch that details the elements of a system, such as the elements of an electrical circuit or the elements of a logic diagram for…
SCISpecial Compartmented Information (Security term).
SCIFSensitive Compartmented Information Facility (Security term).
scintillationIn electromagnetic wave propagation, a small random fluctuation of the received field strength about its mean value.
ScissionThe process in which a chemical bond in a molecule is broken either by reaction with another molecule, such as water, or by the absorption of a high…
SCL (spam confidence level)The normalized value that is assigned to an e-mail message. This value indicates, based on the characteristics of the message, such as the content…
scopewhat is included - as in the scope of a claim
Scope fieldA scope field contains hierarchically structured content. It enables schema flexibility and the ability to conserve hierarchical relationships rather than…
Scope SearchScope SearchÃÂ enables search in hierarchical content structures without a need to know the schema in advance.
Scoping GuidanceProvides organizations with specific technology-related, infrastructure-related, public access-related, scalability-related, common security…
SCORESupplemental Complex Repository for Examiners
SCR (standby continuous replication)Standby continuous replication (SCR) is a new feature introduced in Microsoft Exchange Server 2007 Service Pack 1 (SP1).
scramblerA device that transposes or inverts signals or otherwise encodes a message at the transmitter to make the message unintelligible at a receiver not…
Scraper sitesDesigned to 'scrape' search-engine results pages or other sources of content (often without permission) to create content for a website.
scratch fileA temporary file holding intermediate data during an operation, such as when calculating arc intersections, or building feature topology.
scratchpadThe area in which a particular invocation of a particular file or subroutine keeps some of its temporary values, including any lexically scoped variables.
screenA screen is a set of criteria against which you measure stocks or other investments to find those that meet your criteria.
screen captureIn computers, the process or act by which the data currently displayed on a monitor, usually representing a single frame of information, are stored or…
screen readerA device that renders onscreen text as audible language. .
screened subnetworkA subnetwork that permits access from both untrusted external networks and from trusted internal networks, but does not permit traffic flow between the…
screening(SKREEN-ing) Checking for disease when there are no symptoms. Since screening may find diseases at an early stage, there may be a better chance of curing…
screening routerA network router capable of discriminating network-based traffic on the protocol type and the value of the protocol fields within the packet. [2382-pt.35]
scriptA text "file" that is a program intended to be executed directly rather than compiled to another form of file before execution.
Script kiddieA "cracker" who is not a "hacker", but knows just enough to run canned scripts. A cargo-cult programmer.
Scripting AgentExchange Server Scripting Agent lets you use server-side scripts that run as a result of events occurring in Exchange folders.
scripting languageA programming language designed specifically for Web site programming. Examples include JScript and Microsoft Visual Basic Scripting Edition (VBScript).
scrollIn a display device, to move the display window of the screen vertically to view the contents of a stored document.
scroll-mode terminalA terminal in which the data are displayed (or pass by) a line at a time.
SCSI (Small Computer System Interface)Pronounced skuzzy. A common, industry standard, electronic interface (highway) between computers and peripherals, such as hard discs, CD-ROM drives and…
SCSI addressThe full address of a device, consisting of the SCSI adapter number and SCSI ID, for example, 8a.1
SCSI BusA host adapter and one or more SCSI peripherals connected by cables in a linear chain configuration.
SCSI DeviceA device such as a host adapter board, fixed disk drive, or CD-ROM drive that is an initiator or a target or both, and is attached to a SCSI bus cable.
SCSI IDA unique identification number used for each device on the SCSI chain.
SCUDSmall, ragged, low cloud fragments that are unattached to a larger cloud base and often seen with and behind cold fronts and thunderstorm gust fronts.
ScumwareIntrusive software and programs which usually target ads, violate privacy, and are often installed without the computer owner knowing what the software…
SCW (Security Configuration Wizard)A tool that automates security best practices to reduce the attack surface for a server. The SCW was introduced with Windows Server 2003 Service Pack 1.
SDStrategic Defense Command (Army term) (See also SDC).