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Two male Hybrid III crash test dummies inside a Subaru Outback. A crash test dummy, or simply dummy, is a full-scale anthropomorphic test device (ATD) that simulates the dimensions, weight proportions and articulation of the human body during a traffic collision. Dummies are used by researchers, automobile and aircraft manufacturers to predict ...
Analytical thermal desorption. Analytical thermal desorption, known within the analytical chemistry community simply as "thermal desorption" (TD), is a technique that concentrates volatile organic compounds (VOCs) in gas streams prior to injection into a gas chromatograph (GC). It can be used to lower the detection limits of GC methods, and can ...
4.3 m (14 ft) Azimuth. 360°. Advanced Technology Demonstrator (ATD) is an experimental weather radar system using Phased Array technology seeking to enhance Phased Array capabilities with the addition of dual-polarity and pulse compression. [1] Its predecessor, MPAR, was the first large-scale PAR experiment taken on by NOAA in 2003, and was ...
Analog-to-digital converter. In electronics, an analog-to-digital converter ( ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal.
Abstract data type. In computer science, an abstract data type ( ADT) is a mathematical model for data types, defined by its behavior ( semantics) from the point of view of a user of the data, specifically in terms of possible values, possible operations on data of this type, and the behavior of these operations.
Command mode and Data mode refers to the two modes in which a computer modem may operate. These modes are defined in the Hayes command set, which is the de facto standard for all modems. These modes exist because there is only one channel of communication between the modem and the computer, which must carry both the computer's commands to the ...
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ATD may refer to: Computing and technology. Anthropomorphic test device, also known as a crash test dummy; at (command) or @daemon (spelled "atd", lower case), a standard Unix program; Azimuth tractor drive, a drive system for tugboats; Medicine and science. 1,4,6-Androstatrien-3,17-dione, estrogen inhibitor; Acute tryptophan depletion