Trapezius muscle pain or trapezius myalgia is common in women who perform repetitive tasks. It is also common in women who sit in one position with little motion of the arms such as working at a computer keyboard or sitting at a desk.
The Swedish botanist Carolus Linnaeus is regarded as the father of taxonomy, as he developed a system known as Linnaean classification for categorization of organisms and binomial nomenclature for naming organisms.ristotle used a very simple system of classification. He divided all living thing into two groups: plant and animals. Some of the terms he gave to animals, such as  invertebrates  and  vertebrates  are still commonly used today.
The best known classification is that developed by the psychologist Stanley Smith Stevens, who proposed four levels, or scales, of measurement: nominal, ordinal, interval, and ratio.araphrasing N.R. Campbell (Final Report, p.340), we may say that measurement, in the broadest sense, is defined as the assignment of numerals to objects and events according to rules (Stevens, 1946, p.677).