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Artificial intelligence was founded as an academic discipline in 1956, [6] and the field went through multiple cycles of optimism throughout its history, [7] [8] followed by periods of disappointment and loss of funding, known as AI winters. [9] [10] Funding and interest vastly increased after 2012 when deep learning outperformed previous AI ...
Those advantages may be divided, first, into the general advantages which Europe, considered as one great country, has derived from those great events; and, secondly, into the particular advantages which each colonising country has derived from the colonies which particularly belong to it, in consequence of the authority or dominion which it ...
About 68% of values drawn from a normal distribution are within one standard deviation σ from the mean; about 95% of the values lie within two standard deviations; and about 99.7% are within three standard deviations. [8] This fact is known as the 68–95–99.7 (empirical) rule, or the 3-sigma rule.
The earlier term for the discipline was "political economy", but since the late 19th century, it has commonly been called "economics". [22] The term is ultimately derived from Ancient Greek οἰκονομία (oikonomia) which is a term for the "way (nomos) to run a household (oikos)", or in other words the know-how of an οἰκονομικός (oikonomikos), or "household or homestead manager".
The simplest definition of literacy in a nation is the percent of people age 15 or older who can read and write, which is used to rank nations. More complex definitions, involving the kind of reading needed for occupations or tasks in daily life, are termed functional literacy, prose literacy, document literacy and quantitative literacy.
The oldest form of rechargeable battery is the lead–acid battery, which are widely used in automotive and boating applications. This technology contains liquid electrolyte in an unsealed container, requiring that the battery be kept upright and the area be well ventilated to ensure safe dispersal of the hydrogen gas it produces during ...
In stereo, each track is further divided into a left and a right channel of 0.6 mm (0.024 in) each, with a gap of 0.3 mm (0.012 in). [100] The tape moves past the playback head at 1 + 7 ⁄ 8 inches per second (4.76 cm/s), the speed being a continuation of the increasingly slower speed series in open-reel machines operating at 30, 15, 7 + 1 ...