The word is sometimes confused with stationery, meaning paper or office supplies. However also see stationery, which indicates that "stationary" is the original spelling and is also the most common spelling today. Wikipedia does not have an article with this exact name. ... Wiktionary is a Wikimedia Foundation project intended to be a free wiki dictionary (hence: Wiktionary) (including thesaurus and lexicon) in every language. ... A graph of a bell curve in a normal distribution showing statistics used in educational assessment, comparing various grading methods. ... This article does not cite its references or sources. ... In the mathematical sciences, a stationary process (or strict(ly) stationary process) is a stochastic process in which the probability density function of some random variable X does not change over time or position. ... Euclid, Greek mathematician, 3rd century BC, known today as the father of geometry; shown here in a detail of The School of Athens by Raphael. ... Stationary points (red pluses) and inflection points (green circles). ... Euclid, Greek mathematician, 3rd century BC, known today as the father of geometry; shown here in a detail of The School of Athens by Raphael. ... In mathematics, particularly in set theory, if is a cardinal, , and intersects every club in , then is called a stationary set. ... The first few hydrogen atom electron orbitals shown as cross-sections with color-coded probability density. ... Stationery is a general name given to paper and office supplies such as envelopes, notepads, pens, pencils, erasers, paper clips, staples, etc. ...
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These workers are called stationary engineers because the equipment they operate is similar to equipment operated by locomotive or marine engineers except it is not in a vehicle that moves.
Stationary engineers also perform routine maintenance, such as repairing and replacing pumps, motors and other operating equipment, lubricating moving parts, replacing filters, and removing soot and corrosion that can reduce operating efficiency.
A stationary engineer may be in charge of operation, maintenance and repair of all mechanical systems in a building, industrial power plant or engine room.
Stationary sources are non-moving sources, fixed-site producers of pollution such as power plants, chemical plants, oil refineries, manufacturing facilities, and other industrial facilities.
Stationary sources emit both criteria pollutants and hazardous air pollutants (HAPs).
Stationary sources are also classified as major and minor sources.
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