Recently in Tech Terms Category
What is an Unsharp Mask?
Definition: Despite the name, this is an edge-enhancing filter frequently used in teleradiology. It is created by first generating a low-pass filtered image, which is then subtracted from the original image. This effectively removes part of the background, leaving an image where contours are emphasized.
What are Thumbnails?
Definition: Miniature pictures of images using very small, low resolution data files. These download for display very quickly, and can be compared on-screen to select the proper high-resolution image.
What is a Laser Digitizer?
Definition: A laser scanner that employs a laser to capture image information to digital form. Very high resolution and wide gray scale range are possible.
Because it uses coherent light, the laser scanner can penetrate thick films (an ability measured in units of optical density) and extract information better than CCD scanners.
Serves the same function as CCD X-ray scanners, but generally at higher resolution, better contrast, and much higher price.
What is a Image Management?
Definition: Stored image management denotes the ability to sort, arrange, and manipulate stored images into functional groups.
Some systems allow the user to store images, but once done they cannot be arranged and are permanently stored in the order in which they were saved. This may be cumbersome.
What is an Online Audit?
Definition: Focused
Webcentric research effort designed to document a comprehensive profile of a
site, brand, product, service, concept, idea, or topic for the purpose of
evaluation and optimization or improvement.
What is Universal Health Care?
Definition: Is a term that refers to a governmental system meant to ensure that every citizen or resident of a region has access to the required medical services.
The methods through which payment is achieved, and through which doctors practice medicine, vary widely depending on the country or municipality.
What is Bursty Data?
Definition: Short, intense transmissions of grouped, related information. LAN (Local Area Network) traffic is typically bursty. Sometimes called "boluses of data" by medical clinicians.
What is a Social Networking Site?
Definition: Web site featuring focused, often user-generated, content that exists at the center of an active, engaged network, or community, of site visitors who openly converse about a common inters.
Includes personal profiles, blogs, discussion groups, photos, music, and photos, music, and videos.
What is ASDL (Asymmetric Digital Subscriber Line)?
Definition: ADSL is a form of Digital Subscriber Line (DSL) Internet service. ADSL provides greater bandwidth for downloads at the expense of upload speeds. ADSL is the most common form of DSL used in home networking.
ADSL is designed to support the typical home user who frequently downloads large amounts of data from Web sites and P2P networks but upload relatively less often. ADSL works by allocating a majority of the available phone line frequencies for communication of downstream traffic.
In other respects, ADSL possesses all of the characteristics one associates with DSL, including "high-speed" service, an "always on" combination of voice and data support, and availability and performance that is limited by physical distance. ADSL is technically capable of up to 6 Mbps (roughly 6000 Kbps), but ADSL customers in practice obtain 2 Mbps or lower for downloads and up to 512 Kbps for uploads.
What is Bandwith?
DEFINITION: In computer networks, bandwidth is often used as a synonym for data transfer rate - the amount of data that can be carried from one point to another in a given time period (usually a second).
This kind of bandwidth is usually expressed in bits (of data) per second (bps). Occasionally, it's expressed as bytes per second (Bps).
A modem that works at 57,600 bps has twice the bandwidth of a modem that works at 28,800 bps.
In general, a link with a high bandwidth is one that may be able to carry enough information to sustain the succession of images in a video presentation.
It should be remembered that a real communications path usually consists of a succession of links, each with its own bandwidth.
If one of these is much slower than the rest, it is said to be a bandwidth bottleneck.
In electronic communication, bandwidth is the width of the range (or band) of frequencies that an electronic signal uses on a given transmission medium.
In this usage, bandwidth is expressed in terms of the difference between the highest-frequency signal component and the lowest-frequency signal component.
Since the frequency of a signal is measured in hertz (the number of cycles of change per second), a given bandwidth is the difference in hertz between the highest frequency the signal uses and the lowest frequency it uses.
A typical voice signal has a bandwidth of approximately three kilohertz (3 kHz); an analog television (TV) broadcast video signal has a bandwidth of six megahertz (6 MHz) -- some 2,000 times as wide as the voice signal.
