Stratified Ironstone Mines (Gunpowder) Act 1881
Stratification may refer to: Mathematics * Stratification (mathematics), any consistent assignment of numbers to predicate symbols * Data stratification in statistics Earth sciences * Stable and unstable stratification * Stratification, or stratum, the layering of rocks * Stratification (archeology), the formation of layers (strata) in which objects are found * Stratification (water), the formation of water layers based on temperature (and salinity, in oceans) * Lake stratification, the formation of water layers based on temperature, with mixing in the spring and fall in seasonal climates. * Atmospheric stratification, the dividing of the Earth's atmosphere into strata * Inversion (meteorology) Social sciences * Social stratification, the dividing of a society into levels based on power or socioeconomic status Biology * Stratification (seeds), where seeds are treated to simulate winter conditions so that germination may occur * Stratification (clinical trials), partition ...
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PRIME
A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways of writing it as a product, or , involve 5 itself. However, 4 is composite because it is a product (2 × 2) in which both numbers are smaller than 4. Primes are central in number theory because of the fundamental theorem of arithmetic: every natural number greater than 1 is either a prime itself or can be factorized as a product of primes that is unique up to their order. The property of being prime is called primality. A simple but slow method of checking the primality of a given number n, called trial division, tests whether n is a multiple of any integer between 2 and \sqrt. Faster algorithms include the Miller–Rabin primality test, which is fast but has a small chance of error, and the AKS primality test, which always pr ...
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Stratification (linguistics)
In linguistics, stratification refers to the idea that language is organized in terms of hierarchically ordered strata (such as phonology, morphology, syntax, and semantics). This notion can be traced back to Saussure's dichotomy between signified and signifier and Hjelmslev's expression plane and content plane, but has been explicictly explored as a theoretical concept in stratificational linguistics and systemic functional linguistics. Gleason, H. 1964. The organization of language: a stratificational view. In Stuart, C. (ed.), ''Report of the Fifteenth Annual (First International) Round Table Meeting on Linguistics and Language Studies'' (Monograph Series on Languages and Linguistics, 17). Washington: Georgetown University Press, 75–95. In systemic functional linguistics In systemic functional linguistics, stratification is one of the global semiotic dimensions that define the organization of language in context, alongside instantiation and metafunction. Stratification o ...
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Stratified Sampling
In statistics, stratified sampling is a method of sampling from a population which can be partitioned into subpopulations. In statistical surveys, when subpopulations within an overall population vary, it could be advantageous to sample each subpopulation (stratum) independently. Stratification is the process of dividing members of the population into homogeneous subgroups before sampling. The strata should define a partition of the population. That is, it should be '' collectively exhaustive'' and '' mutually exclusive'': every element in the population must be assigned to one and only one stratum. Then simple random sampling is applied within each stratum. The objective is to improve the precision of the sample by reducing sampling error. It can produce a weighted mean that has less variability than the arithmetic mean of a simple random sample of the population. In computational statistics, stratified sampling is a method of variance reduction when Monte Carlo method ...
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Stratified Epithelial Lining (other)
Stratified epithelial lining can refer to: * Stratified squamous epithelium * Stratified columnar epithelium * Stratified cuboidal epithelium Stratified cuboidal epithelium is a type of epithelial tissue composed of multiple layers of cube-shaped cells. Only the most superficial layer is made up of cuboidal cells, and the other layers can be cells of other types. Topmost layer of skin ...

Strata (other)
Strata is the plural of stratum (the geological formation); for uses in the singular, see Stratum (other). Strata may also refer to: Media Music * Strata (band), a Northern California band * ''Strata'' (Matthew Shipp album), 1998 * ''Strata'' (Robert Rich and Steve Roach album), 1990 * ''Strata'' (Strata album), 2004 * Strata Records, a record label * Strata-East Records, a record label Printed media * Strata (comics), a superhero in the DC Universe * ''Strata'' (novel), a science fiction novel by Terry Pratchett Software * Kirix Strata, a web browser * Strata (company), a software company * Strata 3D, a 3D software * ''Strata'' (video game), a 2013 puzzle game * Strata, an IT certification from CompTIA Other uses * Strata (food), a family of layered casseroles * Strata (linguistics) * Strata roller coaster, a height classification, of roller coaster * Strata SE1, a building in London, England * Strata title, a form of ownership devised for multi-level ...
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Partition (other)
Partition may refer to: Computing Hardware * Disk partitioning, the division of a hard disk drive * Memory partition, a subdivision of a computer's memory, usually for use by a single job Software * Partition (database), the division of a database * Logical partition (LPAR), a subset of a computer's resources, virtualized as a separate computer Problems * Binary space partitioning * Partition problem, an NP-complete problem in computer science Mathematics * Partition (number theory), a way to write a number as a sum of other numbers * Multiplicative partition, a way to write a number as a product of other numbers * Partition of an interval * Partition of a set * Partition of unity, a certain kind of set of functions on a topological space * Plane partition * Graph partition Natural science * Partition function (quantum field theory) * Partition function (statistical mechanics) * Partition coefficient, a concept in organic chemistry Law and politics * Partition ( ...
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Layer (other)
Layer or layered may refer to: Arts, entertainment, and media * ''Layers'' (Kungs album) * ''Layers'' (Les McCann album) * ''Layers'' (Royce da 5'9" album) *"Layers", the title track of Royce da 5'9"'s sixth studio album *Layer, a female Maverick Hunter in the ''Mega Man X'' series *Layer, an element in a digital painting * ''Layer'' (film), a 2022 Russian film Science * Stratum, a layer of rock or soil with internally consistent characteristics * Thermocline, a layer within a body of water where the temperature changes rapidly with depth *Layer, an area in the neocortex with specific structure and connection pattern among neurons Technology Computing * Layer (object-oriented design), a group of classes that have the same set of link-time module dependencies to other modules * Layers (digital image editing), used in digital image editing to separate different elements of an image * Layers, in 2D computer graphics * Abstraction layer, a way of hiding the implementation detai ...
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Fuel Stratified Injection
Gasoline direct injection (GDI), also known as petrol direct injection (PDI), is a mixture formation system for internal combustion engines that run on gasoline (petrol), where fuel is injected into the combustion chamber. This is distinct from manifold fuel injection systems, which inject fuel into the intake manifold. The use of GDI can help increase engine efficiency and specific power output as well as reduce exhaust emissions. The first GDI engine to reach production was introduced in 1925 for a low-compression truck engine. Several German cars used a Bosch mechanical GDI system in the 1950s, however usage of the technology remained rare until an electronic GDI system was introduced in 1996 by Mitsubishi for mass-produced cars. GDI has seen rapid adoption by the automotive industry in recent years, increasing in the United States from 2.3% of production for model year 2008 vehicles to approximately 50% for model year 2016. Operating principle Charge modes The 'charg ...
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Destratification (other)
Destratification may refer to: * Thermal destratification, mixing air to reduce stratified layers of heat that become trapped near the ceiling in buildings * Lake stratification Lake stratification is the tendency of lakes to form separate and distinct thermal layers during warm weather. Typically stratified lakes show three distinct layers, the Epilimnion comprising the top warm layer, the thermocline (or Metalimnion) ...

Semantics
Semantics (from grc, σημαντικός ''sēmantikós'', "significant") is the study of reference, meaning, or truth. The term can be used to refer to subfields of several distinct disciplines, including philosophy, linguistics and computer science. History In English, the study of meaning in language has been known by many names that involve the Ancient Greek word (''sema'', "sign, mark, token"). In 1690, a Greek rendering of the term ''semiotics'', the interpretation of signs and symbols, finds an early allusion in John Locke's ''An Essay Concerning Human Understanding'': The third Branch may be called [''simeiotikí'', "semiotics"], or the Doctrine of Signs, the most usual whereof being words, it is aptly enough termed also , Logick. In 1831, the term is suggested for the third branch of division of knowledge akin to Locke; the "signs of our knowledge". In 1857, the term '' semasiology'' (borrowed from German ''Semasiologie'') is attested in Josiah W. Gibb ...
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Syntax
In linguistics, syntax () is the study of how words and morphemes combine to form larger units such as phrases and sentences. Central concerns of syntax include word order, grammatical relations, hierarchical sentence structure ( constituency), agreement, the nature of crosslinguistic variation, and the relationship between form and meaning (semantics). There are numerous approaches to syntax that differ in their central assumptions and goals. Etymology The word ''syntax'' comes from Ancient Greek roots: "coordination", which consists of ''syn'', "together", and ''táxis'', "ordering". Topics The field of syntax contains a number of various topics that a syntactic theory is often designed to handle. The relation between the topics is treated differently in different theories, and some of them may not be considered to be distinct but instead to be derived from one another (i.e. word order can be seen as the result of movement rules derived from grammatical relations). ...
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Morphology (linguistics)
In linguistics, morphology () is the study of words, how they are formed, and their relationship to other words in the same language. It analyzes the structure of words and parts of words such as stems, root words, prefixes, and suffixes. Morphology also looks at parts of speech, intonation and stress, and the ways context can change a word's pronunciation and meaning. Morphology differs from morphological typology, which is the classification of languages based on their use of words, and lexicology, which is the study of words and how they make up a language's vocabulary. While words, along with clitics, are generally accepted as being the smallest units of syntax, in most languages, if not all, many words can be related to other words by rules that collectively describe the grammar for that language. For example, English speakers recognize that the words ''dog'' and ''dogs'' are closely related, differentiated only by the plurality morpheme "-s", only found bound to noun ...
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