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Stacks (geology)
Stack may refer to: Places * Stack Island, an island game reserve in Bass Strait, south-eastern Australia, in Tasmania’s Hunter Island Group * Blue Stack Mountains, in Co. Donegal, Ireland People * Stack (surname) (including a list of people with the name) * Parnell "Stacks" Edwards, a key associate in the Lufthansa heist * Stack Pierce, Robert Stack Pierce (1933–2016), an American actor and baseball player * Robert Stack (1919 – 2003), and American actor and television show host * Stack Stevens, Brian "Stack" Stevens (1941–2017), a Cornish rugby player Arts, entertainment, and media * ''Stack magazine'', a bimonthly publication about high school sports * Stacks (album), ''Stacks'' (album), a 2005 album by Bernie Marsden * Stacks, trailer parks that were made vertical, in the film ''Ready Player One (film), Ready Player One'' Computing * Stack (abstract data type), abstract data type and data structure based on the principle of last in first out * Stack (Haskell), a tool ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stack Island
Stack Island is an island game reserve, with an area of 23.7 hectare, ha and a high point 54 m above sea-level, in Bass Strait, south-eastern Australia. It is part of Tasmania’s Hunter Island Group which lies between north-west Tasmania and King Island (Tasmania), King Island. Fauna The island forms part of the Hunter Island Group Important Bird Area.BirdLife International. (2011). Important Bird Areas factsheet: Hunter Island Group. Downloaded from http://www.birdlife.org on 2011-07-09. Breeding seabirds and shorebirds include little penguin, short-tailed shearwater, Pacific gull, silver gull, sooty oystercatcher, black-faced cormorant, crested tern and fairy tern. Mammals include small numbers of European rabbit, rabbits and rakali.Brothers, Nigel; Pemberton, David; Pryor, Helen; & Halley, Vanessa. (2001). ''Tasmania’s Offshore Islands: seabirds and other natural features''. Tasmanian Museum and Art Gallery: Hobart. References North West Tasmania Important Bird ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solution Stack
In computing, a solution stack or software stack is a set of software subsystems or components needed to create a complete platform such that no additional software is needed to support applications. Applications are said to "run on" or "run on top of" the resulting platform. For example, to develop a web application, the architect defines the stack as the target operating system, web server, database, and programming language. Another version of a software stack is operating system, middleware, database, and applications. Regularly, the components of a software stack are developed by different developers independently from one another. Some components/subsystems of an overall system are chosen together often enough that the particular set is referred to by a name representing the whole, rather than by naming the parts. Typically, the name is an acronym representing the individual components. The term "solution stack" has, historically, occasionally included hardware compone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Stack
Operation Stack was a procedure used by Kent Police and the Port of Dover in England to park (or "stack") lorries on the M20 motorway in Kent when services across the English Channel, such as those through the Channel Tunnel or from the Port of Dover, are disrupted, for example by bad weather, industrial action, fire, or derailments in the tunnel. Since 2019, it has been superseded by the Operation Brock contraflow system. Operation Stack was managed by Kent Police using powers under the Civil Contingencies Act 2004 and coordinated by a multi-agency group known as Operation Fennel. According to Damian Green MP, by 2007 the system had been implemented 74 times in the 20 years since it was first introduced. Causes Operation Stack is implemented whenever there is an urgent need to inhibit the flow of traffic to the Channel Tunnel and the Port of Dover, which handle 90% of freight traffic between the United Kingdom and mainland Europe. There are officially only 550 park ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stack (rocketry)
A multistage rocket or step rocket is a launch vehicle that uses two or more rocket ''stages'', each of which contains its own Rocket engine, engines and Rocket propellant, propellant. A ''tandem'' or ''serial'' stage is mounted on top of another stage; a ''parallel'' stage is attached alongside another stage. The result is effectively two or more rockets stacked on top of or attached next to each other. Two-stage rockets are quite common, but rockets with as many as five separate stages have been successfully launched. By jettisoning stages when they run out of propellant, the mass of the remaining rocket is decreased. Each successive stage can also be optimized for its specific operating conditions, such as decreased atmospheric pressure at higher altitudes. This ''staging'' allows the thrust of the remaining stages to Newton's First Law of Motion, more easily accelerate the rocket to its final velocity and height. In serial or tandem staging schemes, the first stage is at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Stack (philosophy)
"The stack" is a term used in science and technology studies, the philosophy of technology and media studies to describe the multiple interconnected layers that computation depends on at a planetary scale. The term was introduced by Benjamin H. Bratton in a 2014 essay and expanded upon in his 2016 book ''The Stack: On Software and Sovereignty'', and has been adapted, critiqued and expanded upon by numerous other scholars. Use in scholarship The stack refers to the entire global megastructure of interconnected computer systems. The stack includes not only technology and software, but also depends on human users, natural resources and corporate infrastructures. The term draws upon the concept of the stack in programming and by the layered architecture of the Internet Protocol, but provides a model at a planetary scale. In an essay that is critical of Bratton's model, Geert Lovink proposes instead of referring to a singular stack we should speak of "a rainbow of a thousand s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow Stackhousia
''Stackhousia dielsii'', commonly known as yellow stackhousia, is a species of plant in the family Celastraceae The Celastraceae (staff-vine or bittersweet) are a family of 98 genera and 1,350 species of herbs, vines, shrubs and small trees, belonging to the order Celastrales. The great majority of the genera are tropical, with only ''Celastrus'' (the staf .... The dense perennial herb typically grows to a height of and has a sedge-like habit. It blooms between July and November and produces yellow-green flowers. The species is found on sandy soils in coastal areas of the Mid West region of Western Australia. References {{Taxonbar, from=Q17242227 dielsii Plants described in 1905 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stacking (chemistry)
In chemistry, stacking refers to superposition of molecules or atomic sheets owing to attractive interactions between these molecules or sheets. Metal dichalcogenide compounds Metal dichalcogenides have the formula ME2, where M = a transition metal and E = S, Se, Te. In terms of their electronic structures, these compounds are usually viewed as derivatives of M4+. They adopt stacked structures, which is relevant to their ability to undergo intercalation, e.g. by lithium, and their lubricating properties. The corresponding diselenides and even ditellurides are known, e.g., TiSe2, MoSe2, and WSe2. Charge transfer salts A combination of tetracyanoquinodimethane (TCNQ) and tetrathiafulvalene (TTF) forms a strong charge-transfer complex referred to as ''TTF-TCNQ''. The solid shows almost metallic electrical conductance. In a TTF-TCNQ crystal, TTF and TCNQ molecules are arranged independently in separate parallel-aligned stacks, and an electron transfer occurs from donor (TTF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stacks Project
The Stacks Project is an open source collaborative mathematics textbook writing project with the aim to cover "algebraic stacks and the algebraic geometry Algebraic geometry is a branch of mathematics which uses abstract algebraic techniques, mainly from commutative algebra, to solve geometry, geometrical problems. Classically, it studies zero of a function, zeros of multivariate polynomials; th ... needed to define them". , the book consists of 116 chapters (excluding the license and index chapters) spreading over 7500 pages. The maintainer of the project, who reviews and accepts the changes, is Aise Johan de Jong. References External linksProject website*Latest from the Stacks Project(as of 2013) (Accessed 1 April 2020)Kerodona Stacks project inspired online textbook on categorical homotopy theory maintained by Jacob Lurie Mathematics textbooks {{mathematics-lit-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algebraic Stack
In mathematics, an algebraic stack is a vast generalization of algebraic spaces, or schemes, which are foundational for studying moduli theory. Many moduli spaces are constructed using techniques specific to algebraic stacks, such as Artin's representability theorem, which is used to construct the moduli space of pointed algebraic curves \mathcal_ and the moduli stack of elliptic curves. Originally, they were introduced by Alexander Grothendieck to keep track of automorphisms on moduli spaces, a technique which allows for treating these moduli spaces as if their underlying schemes or algebraic spaces are smooth. After Grothendieck developed the general theory of descent, and Giraud the general theory of stacks, the notion of algebraic stacks was defined by Michael Artin. Definition Motivation One of the motivating examples of an algebraic stack is to consider a groupoid scheme (R,U,s,t,m) over a fixed scheme S. For example, if R = \mu_n\times_S\mathbb^n_S (where \mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stack (mathematics)
In mathematics a stack or 2-sheaf is, roughly speaking, a sheaf (mathematics), sheaf that takes values in category (mathematics), categories rather than sets. Stacks are used to formalise some of the main constructions of descent theory, and to construct fine moduli stacks when fine moduli spaces do not exist. Descent theory is concerned with generalisations of situations where isomorphism, isomorphic, compatible geometrical objects (such as vector bundles on topological spaces) can be "glued together" within a restriction of the topological basis. In a more general set-up the restrictions are replaced with Pullback (category theory), pullbacks; fibred category, fibred categories then make a good framework to discuss the possibility of such gluing. The intuitive meaning of a stack is that it is a fibred category such that "all possible gluings work". The specification of gluings requires a definition of coverings with regard to which the gluings can be considered. It turns out that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stack (geology)
A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind and water, processes of coastal geomorphology. britannica.com They are formed when part of a is eroded by hydraulic action, which is the force of the sea or water crashing against the rock. The force of the water weakens cracks in the headland, causing them to later collapse, forming free-standing stacks and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
