A CAPTCHA (an acronym for “Completely Automated Public Turing test to tell Computers and Humans Apart”) is a type of challenge-response test used in computing to determine whether or not the user is human. The term was coined in 2000 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper of Carnegie Mellon University and John Langford of IBM. The most common type of CAPTCHA was first invented by Mark D. Lillibridge, Martin Abadi, Krishna Bharat and Andrei Z. Broder. This form of CAPTCHA requires that the user type the letters of a distorted image, sometimes with the addition of an obscured sequence of letters or digits that appears on the screen. Because the test is administered by a computer, in contrast to the standard Turing test that is administered by a human, a CAPTCHA is sometimes described as a reverse Turing test. This term is ambiguous because it could also mean a Turing test in which the participants are both attempting to prove they are the computer.
14 July 2014 :: The FIFA World Cup is an international association football competition established in 1930. It is contested by the men’s national teams of the members of Fédération Internationale de Football Association (FIFA), the sport’s global governing body. The tournament has taken place every four years, except in 1942 and 1946, when the […]
Handbook 2015 HEALTH * Drink plenty of water. * Eat Breakfast like a king, Lunch like a prince & Dinner like a beggar. * Live with the 3 E’s– Energy, Enthusiasm & Empathy. * Make time to pray. * Play more games. * Read more books than you did in 2014. * Sit in silence […]
April 27, 2015 :: Reiki is a Japanese technique for stress reduction and relaxation that also promotes healing. It is administered by “laying on hands” and is based on the idea that an unseen “life force energy” flows through us and is what causes us to be alive. If one’s “life force energy” is low, […]