News tagged with global positioning system
Global Positioning System
The Global Positioning System (GPS) is a global navigation satellite system (GNSS) developed by the United States Department of Defense and managed by the United States Air Force 50th Space Wing. It is the only fully functional GNSS in the world, can be used freely by anyone, anywhere, and is often used by civilians for navigation purposes. It uses a constellation of between 24 and 32 medium Earth orbit satellites that transmit precise radiowave signals, which allow GPS receivers to determine their current location, the time, and their velocity. Its official name is NAVSTAR GPS. Although NAVSTAR is not an acronym, a few backronyms have been created for it.
Since it became fully operational on April 27, 1995, GPS has become a widely used aid to navigation worldwide, and a useful tool for map-making, land surveying, commerce, scientific uses, tracking and surveillance, and hobbies such as geocaching. Also, the precise time reference is used in many applications including the scientific study of earthquakes and as a required time synchronization method for cellular network protocols such as the IS-95 standard for CDMA.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
The lead investigator of a way to obtain images of prostate tumors and accurately diagnose them said Thursday that the new technology is the medical equivalent of a global positioning system for the prostate gland.
Cancer May 03, 2013 | 5 / 5 (1) | 0
Just as a global positioning system (GPS) helps find your location, the brain has an internal system for helping determine the body's location as it moves through its surroundings.
Neuroscience Mar 07, 2013 | 4 / 5 (2) | 1 |
Computerized aids that include person-like characteristics can influence trust and dependence among adults, according to a Clemson University researcher.
Psychology & Psychiatry Jul 17, 2012 | 5 / 5 (1) | 0
(Medical Xpress) -- Researchers in the US have developed a new detector for measuring rare circulating tumor cells (CTCs) in samples of whole blood.
Cancer Jul 07, 2012 | 4.3 / 5 (3) | 0 |
Computer models that predict crowd behaviour could be used to prevent the spread of infections at mass gatherings
(Medical Xpress) -- Computer models that provide accurate simulations of how crowds behave can be used to identify health and safety issues at MGs, and could be adapted to simulate the spread of infections ...
Diseases, Conditions, Syndromes Jan 16, 2012 | not rated yet | 0
In the mid-nineteenth century, John Snow mapped cases of cholera in Soho, London, and traced the source of the outbreak to a contaminated water pump. Now, in a twenty-first century equivalent, scientists funded ...
Diseases, Conditions, Syndromes Oct 16, 2011 | 4.6 / 5 (5) | 0 |