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Longevity Quotient
Longevity Quotient (LQ) is a simplified measure to enable normalized comparisons of various species' longevity. It shares some similarity with measures such as Intelligence Quotient. It originated with Steven N. Austad and Kathleen E Fischer's 1991 paper on mammalian aging. The detailed description of LQ was originally defined as the ratio of Actual Lifespan divided by Predicted Lifespan obtained from the Nonflying Eutherans (NFE) regression relating observed lifespan and body mass relationship. This followed the work of John Prothero and Klaus Jurgens who strictly looked to related longevity and body mass. Austad spells out that "Excluding bats and marsupials mean LQ is 1.0 by definition" Aging and longevity researchers utilize LQ with additional metrics such as maximum species life span (MLSP). Rochelle Buffenstein considers MLSP as an important species aging characteristic that can vary over a factor of 40,000 throughout the animal kingdom, and is related species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intelligence Quotient
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. Originally, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months. The resulting fraction (quotient) was multiplied by 100 to obtain the IQ score. For modern #Current tests, IQ tests, the test score, raw score is Data transformation (statistics), transformed to a normal distribution with mean 100 and standard deviation 15. This results in approximately two-thirds of the population scoring between IQ 85 and IQ 115 and about 2 percent each Intellectual giftedness, above 130 and Intellectual disability, below 70. Scores from intelligence tests are estimates of intelligence. Unlike, for example, distance and mass, a concrete measure of intelligence cannot be achieved given the abstract nature of the concept o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steven N
Stephen or Steven is an English first name. It is particularly significant to Christians, as it belonged to Saint Stephen ( ), an early disciple and deacon who, according to the Book of Acts, was stoned to death; he is widely regarded as the first martyr (or " protomartyr") of the Christian Church. The name, in both the forms Stephen and Steven, is often shortened to Steve or Stevie. In English, the female version of the name is Stephanie. Many surnames are derived from the first name, including Stephens, Stevens, Stephenson, and Stevenson, all of which mean "Stephen's (son)". In modern times the name has sometimes been given with intentionally non-standard spelling, such as Stevan or Stevon. A common variant of the name used in English is Stephan ( ); related names that have found some currency or significance in English include Stefan (pronounced or in English), Esteban (often pronounced ), and the Shakespearean Stephano ( ). Origins The name "Stephen" (and its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kathleen E Fischer
Kathleen may refer to: People * Kathleen (given name) * Kathleen (singer), Canadian pop singer Places * Kathleen, Alberta, Canada * Kathleen, Georgia, United States * Kathleen, Florida, United States * Kathleen High School (Lakeland, Florida), United States * Kathleen, Western Australia, Western Australia * Kathleen Island, Tasmania, Australia * Kathleen Lumley College, South Australia * Mary Kathleen, Queensland, former mining settlement in Australia Other * ''Kathleen'' (film), a 1941 American film directed by Harold S. Bucquet * ''The Countess Kathleen and Various Legends and Lyrics'' (1892), second poetry collection of William Butler Yeats * Kathleen Ferrier Award, competition for opera singers * Kathleen Mitchell Award, Australian literature prize for young authors * Plan Kathleen, plan for a German invasion of Northern Ireland sanctioned by the IRA Chief of Staff in 1940 * Tropical Storm Kathleen (other) * "Kathleen" (song), a song by Catfish and the Bott ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammalian Aging
A mammal () is a vertebrate animal of the class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors diverged in the Carboniferous Period over 300 million years ago. Around 6,640 extant species of mammals have been described and divided into 27 orders. The study of mammals is called mammalogy. The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including cats, dogs, and seals). Mammals are the only living members of Synapsida; this clade, together with Sauropsida (reptiles and birds), constitutes the large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
