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Discontinuity Essential
Discontinuity may refer to: *Discontinuity (casting), an interruption in the normal physical structure or configuration of an article * Discontinuity (geotechnical engineering), a plane or surface marking a change in physical or chemical properties in a soil or rock mass *Discontinuity (mathematics), a property of a mathematical function *Discontinuity (linguistics), a property of tree structures in theoretical linguistics *Discontinuity (Postmodernism), a conception of history as espoused by the philosopher Michel Foucault. *Revolutionary breach of legal continuity *A break in continuity (fiction), in literature *Fracture (geology) A fracture is any separation in a geologic formation, such as a Joint (geology), joint or a Fault (geology), fault that divides the Rock (geology), rock into two or more pieces. A fracture will sometimes form a deep fissure or crevice in the ro ..., discontinuity in rocks * Discontinuity (transmission lines), a step in impedance causing reflecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discontinuity (casting)
A casting defect is an undesired irregularity in a metal casting process. Some defects can be tolerated while others can be repaired, otherwise they must be eliminated. They are broken down into five main categories: ''gas porosity'', ''shrinkage defects'', ''mould material defects'', ''pouring metal defects'', and ''metallurgical defects''. Terminology The terms "defect" and "" refer to two specific and separate things in castings. Defects are defined as conditions in a casting that must be corrected or removed, or the casting must be rejected. Discontinuities, also known as "imperfections", are defined as "interruptions in the physical continuity of the casting". Therefore, if the casting is less than perfect, but still useful and in tolerance, the imperfections should be deemed "discontinuities". Types There are many types of defects which result from many different causes. Some of the solutions to certain defects can be the cause for another type of defect. The following def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discontinuity (mathematics)
Continuous functions are of utmost importance in mathematics, functions and applications. However, not all Function (mathematics), functions are Continuous function, continuous. If a function is not continuous at a point in its Domain of a function, domain, one says that it has a discontinuity there. The Set theory, set of all points of discontinuity of a function may be a discrete set, a dense set, or even the entire domain of the function. This article describes the classification of discontinuities in the simplest case of functions of a single Real number, real Variable-sweep wing, variable taking real values. The Oscillation (mathematics), oscillation of a function at a point quantifies these discontinuities as follows: * in a removable discontinuity, the distance that the value of the function is off by is the oscillation; * in a jump discontinuity, the size of the jump is the oscillation (assuming that the value ''at'' the point lies between these limits of the two sides); * i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discontinuity (linguistics)
In linguistics, a discontinuity occurs when a given word or phrase is separated from another word or phrase that it modifies in such a manner that a direct connection cannot be established between the two without incurring crossing lines in the tree structure. The terminology that is employed to denote discontinuities varies depending on the theory of syntax at hand. The terms ''discontinuous constituent'', ''displacement'', ''long distance dependency'', ''unbounded dependency'', and ''projectivity violation'' are largely synonymous with the term ''discontinuity''. There are various types of discontinuities, the most prominent and widely studied of these being topicalization, wh-fronting, scrambling, and extraposition. Natural languages vary with respect to the types of discontinuities that they permit. The fixed word order of English allows for relatively few discontinuities compared to, for instance, the Slavic languages, which are much more permissive. Even compared to a closely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discontinuity (Postmodernism)
Discontinuity and continuity according to Michel Foucault reflect the flow of history and the fact that some "things are no longer perceived, described, expressed, characterised, classified, and known in the same way" from one era to the next. (1994). Explanation In developing the theory of '' archaeology of knowledge'', Foucault was trying to analyse the fundamental codes which a culture uses to construct the ''episteme'' or configuration of knowledge that determines the empirical orders and social practices of each particular historical era. He adopted discontinuity as a positive working tool. Some of the discourse would be regular and continuous over time as knowledge steadily accumulates and society gradually establishes what will constitute truth or reason for the time being. But, in a transition from one era to the next, there will be overlaps, breaks and discontinuities as society reconfigures the discourse to match the new environment. The tool is given an expanded role i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revolutionary Breach Of Legal Continuity
Revolutionary breach of legal continuity is a concept in English constitutional law, which rationalises the historic English behavior when one King (or regime) was deposed and a de facto ruler was recognised as the new de jure monarch (or republican authority). More generally it is any process, unauthorised by an existing legal order, which results in the creation of a new legal order; whether or not the revolutionary change is brought about by violence. A technical breach of continuity might happen when the former constitutional arrangement is so inefficient that there is not even a practical legal way to amend it. The most recent successful ''revolutionary breach'' in England and Wales, Scotland and Northern Ireland was the Glorious Revolution of 1688–1689 which replaced King James II of England and Ireland (King James VII of Scotland) with the joint sovereignty of his son-in-law King William III of England (King William II of Scotland) and daughter Queen Mary II of England (an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuity (fiction)
In fiction, continuity is a consistency of the characteristics of people, plot, objects, and places seen by the reader or viewer over some period of time. It is relevant to several media. Continuity is particularly a concern in the production of film and television due to the difficulty of rectifying an error in continuity after shooting has wrapped. It also applies to other art forms, including novels, comics, and video games, though usually on a smaller scale. It also applies to fiction used by persons, corporations, and governments in the public eye. Most productions have a script supervisor on hand whose job is to pay attention to and attempt to maintain continuity across the chaotic and typically non-linear production shoot. This takes the form of a large amount of paperwork, photographs, and attention to and memory of large quantities of detail, some of which is sometimes assembled into the story bible for the production. It usually regards factors both within the scene and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fracture (geology)
A fracture is any separation in a geologic formation, such as a Joint (geology), joint or a Fault (geology), fault that divides the Rock (geology), rock into two or more pieces. A fracture will sometimes form a deep fissure or crevice in the rock. Fractures are commonly caused by Stress (physics), stress exceeding the rock strength, causing the rock to lose cohesion along its weakest plane. Fractures can provide Permeability (fluid), permeability for fluid movement, such as water or hydrocarbons. Highly fractured rocks can make good aquifers or Oil reservoir, hydrocarbon reservoirs, since they may possess both significant Permeability (fluid), permeability and fracture porosity. Brittle deformation Fractures are forms of brittle deformation. There are two types of primary brittle deformation processes. Tensile fracturing results in ''joints''. ''Shear fractures'' are the first initial breaks resulting from shear forces exceeding the cohesive strength in that plane. After those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
