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A picture query language, extension of Sequel2.

["An Image-Oriented Database System", Y. Takao et al, in Database Techniques for Pictorial Applications, A. Blaser ed, pp. 527-538].
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add/drop multiplexer

A device installed at an intermediate point on a transmission line that enables new signals to come in and existing signals to go out. In a typical example, most signals pass through the device, but some would be "dropped" by splitting them from the line. Signals originating at that point can be "added" into the line and directed to another destination.

Add/drop multiplexing can be done with optical or electronic signals. The device may deal only with wavelengths, or it may convert between wavelengths and electronic TDM signals. The setup in an add/drop multiplexer is generally static, and the device is not reprogrammed very often. See TDM, DWDM, digital cross-connect, DCS and grooming.

Add/Drop Multiplexer
Note that the new signal being added can use the same optical channel (wavelength) as the dropped signal. (Illustration assistance courtesy of Jeff Hecht.)
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References in periodicals archive ?
Por lo tanto, la co-expresion de CLR y RAMP2 o RAMP3 puede producir receptores funcionales de ADM. El heterodimero CLR/RAMP2 conforma el subtipo 1 ([AM.sub.1]).
"Adm. Cooper was the leader of the task force which was charged with identifying ways to allow VA's employees to spend more time on processing claims, improving the basic claims process, enhancing accountability at all levels, and emphasizing and encouraging all VA offices to attack the problem of claims backlogs," said DAV National Service Director Kenneth D.
As the new commander of Military Sealift Command, Rear Adm. Brewer is responsible for a fleet of more than 110 ships daily around the world.
(Eichenwald, who provokes many more questions of this nature than he answers, firmly rejects this final possibility--which would have given Whitacre a defense against the embezzlement charges--despite its apparent plausibility given the rampant criminality at ADM.)
Keynote speaker Adm. Gary Roughead, Chief of Naval Operations (CNO), called Rear Adm.
Nobel Peace Prizewinner and former Israeli Prime Minister Shimon Peres visits ADM.
The new business unit will be led by Greg Morris, formerly president, Oilseeds for ADM.
These new processing facilities reportedly complement the company's recent purchase of the remaining interests in Tinna Oils, which is now wholly owned by ADM. The Tinna Oils acquisition includes a soybean and sunflower seed processing plant in Latur, a soybean and sunseed processing plant in Dharwad and a port warehouse in Visakhapatnam.
Christianson, director for logistics, J-4, the Joint Staff; Navy Rear Adm. Al Thompson, director, Supply, Ordnance and Logistics Operations Division, OPNAV N41; and retired Navy Adm.
The certification strengthens ADM Cocoa's position in sustainability, broadening its scope beyond cocoa to integrate sustainability activities across ADM. The company's flagship cocoa sustainability programme--Socially and Environmentally Responsible Agricultural Practices (SERAP) has provided more than $15.3m in financial incentives to cooperatives and individual farms in Cote d'Ivoire alone.
* Navy Vice Adm. Keith Lippert, Director, Defense Logistics Agency
Chief of Naval Operations Adm. Vern Clark announced the following flag officer assignments: