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People counting systems in the retail environment are used to calculate the conversion rate, which is the percentage of total visitors versus the number that make purchases. Shopping mall marketing professionals rely on visitor statistics to measure the effectiveness of the current marketing campaign.
Mechanical tally counters. A tally counter is a mechanical, electronic, or software device used to incrementally count something, typically fleeting. One of the most common things tally counters are used for is counting people, animals, or things that are coming and going from some location.
As understood through analyses of early proto-cuneiform notations from the city of Uruk, there were more than a dozen different counting systems, [18] including a general system for counting most discrete objects (such as animals, tools, and people) and specialized systems for counting cheese and grain products, volumes of grain (including ...
Crowd counting is the act of counting the total crowd present in a certain area. The people in a certain area are called a crowd. The most direct method is to actually count each person in the crowd. For example, turnstiles are often used to precisely count the number of people entering an event. [1]
Athena Security is an American security firm that develops Visitor Management [4] and weapon detection systems. [5] Its technology uses Apple iPad, thermal imaging cameras, low-frequency electro-magnetic technology, and artificial intelligence to detect threats, potential crime such as mass shootings, and those who may have a history of crime.
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Finger positions used for counting up to 9999 from Luca Pacioli's 1494 Summa de arithmetica, based on the earlier Arabic system. Complex systems of dactylonomy were used in the ancient world. [ 1 ] The Greco-Roman author Plutarch, in his Lives , mentions finger counting as being used in Persia in the first centuries CE, so the practice may have ...
A well designed counting system can detect levels of most gamma emitters (>200 keV) at levels far below that which would cause adverse health effects in people. A typical detection limit for radioactive caesium is about 40 Bq. The Annual Limit on Intake (i.e., the amount that would give a person a dose equal to the worker limit that is 20 mSv ...
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