Infobox Album See Wikipedia WikiProject Albums Name Song Mechanism Type EP Artist Deadboy & the Elephantmen Cover Released 2004 Recorded Genre Rock music Swamp Rock Length 18 47 Label Self Released Distributed Last album If This Is Hell, Then I m Lucky br 2002 This album Song Mechanism br 2004 Next album We Are Night Sky br 2006 Originally distributed through Deadboy & the Elephantmen s website, and also by various local Louisiana music stores, Song Mechanism showcases four songs that were later included in Deadboy s second full length album We Are Night Sky . The extended play EP is no longer in print. Track listings How Long the Night Was small 2 42 small Blood Music small 5 30 small Dressed Up in Smoke small 4 52 small The Misadventures of Dope small 5 43 small Category Dax Riggs albums Category 2004 EPs ... more details
File TL 2000 scissor lift.jpg thumb 200px An example of a simple scissor lift . File Pantograph Mirror.gif thumb 200px A pantograph mirror. A scissors mechanism uses linked, folding supports in a criss cross X pattern, ref cite web url http www.engineersedge.com mechanics machines scissor lift.htm title Scissor Lift Jack Review & Equations publisher Engineers Edge, LLC accessdate January 02, 2012 ref known as a pantograph . Workings Extension is achieved by applying pressure to the outside of a set of supports located at one end of the mechanism, elongating the crossing pattern. This can be achieved through hydraulic , pneumatic , machine mechanical or simply muscular means. It may require no power to return to it s original position, but simply a release of the original pressure. Uses This mechanism is used in devices such as lift tables and scissor lift s. References Reflist technology stub Category Mechanisms ... more details
The fusion mechanism is the mechanism by which cell fusion takes place. Cell fusion is the formation of a hybrid cell from two different cells of different species. ref http www.ncbiotech.org biotech101 glossary.cfm dead link date May 2011 ref ref http www.fao.org docrep 003 X3910E X3910E06.htm Glossary of biotechnology and genetic engineering . Fao.org. Retrieved on 2011 05 04. ref Cells from the same organism may fuse together as well. This is often observed during lytic viral infection , where alterations of the cell can be seen under a light microscope. These include changes in morphology, formation of vacuoles and fusion of cells to form Syncytium syncytia . The term cell fusion mechanism refers to the Receptor biochemistry receptors required for cells to fuse, whereas the term cell fusion refers to the action of formation of the new cell. One example of the cellular fusion mechanism is that of HIV infecting the body. HIV infects by fusing with the cell membrane membranes of White blood cell immune system cells . In order for HIV to fuse with a cell, it must be able to bind to the receptors CD4 , CCR5 , and CXCR4 . References reflist Category HIV AIDS Category Cell biology biology stub ... more details
mechanism maps . Five main mechanisms are recognized Cataclastic rock Cataclastic flow cataclastic .... Cataclastic flow This is a mechanism that operates under low to moderate homologous temperature s, low ... of a pore fluid. Grain boundary sliding This mechanism must act with another to change the shapes of the grains so that they can slide past each other without creating significant voids. This mechanism ... mechanism maps Creep deformation DEFAULTSORT Deformation Mechanism Category Structural geology Category ... more details
Image Geneva mechanism 6spoke animation.gif framed right Working principle of a Maltese cross or Geneva drive Image Moviecam schematic animation.gif thumb 320px right Animation of a rotating Movie projector Shutter shutter . The film is transported one frame when the shutter is blocking illumination of the film. The intermittent mechanism or intermittent movement is the device by which film is regularly advanced and then held in place for a brief duration of time in a movie camera or movie projector . This is in contrast to a continuous mechanism, whereby the film is constantly in motion and the image is held steady by optical or electronic scanning dn date February 2012 methods. The reason the intermittent mechanism works for the viewer is because of a psychological phenomenon called persistence of vision . History Intermittent mechanisms were first used in sewing machines , in order for the fabric to be fed through correctly ensuring it is stationary as each stitch is made, while moving the required distance between stitches. Methods used The intermittent mechanism must be employed in concert with a rotating shutter photography shutter which blocks light transmittance during the motion of the film and allows light through while the film is held in place usually by one or more registration pin s. The intermittent mechanism can be accomplished in many ways, but most often, it is done with sprocket wheels, claws, or pins coupled to the camera or projector drive mechanism. In movie theater projectors, the intermittent movement is often produced by a Geneva drive Maltese cross mechanism. However, in a movie camera , it is done through a process by which a Shutter photography shutter opens exposing the film negative to light for a split second the standard for regular motion in North America is 1 48 of a second , then the shutter closes blocking light from reaching the negative. Once the shutter is completely closed, a claw pulls down the next frame of negative film by the sprocket ... more details
The book The Mechanism of Mind details the underpinning model of mind that leads to the many thinking skills developed by Edward de Bono , including lateral thinking . The Model The model detailed in the book, and referred to again in many of Edward de Bono s other books, is one of Neurones networked together by many stronger and weaker connections and activating as a result of input stimulus or stimulation from other neurones that are themselves active. Neurones that are active together form stronger connections and are more likely to activate together in the future. The model is a Self organizing system . It is not intended that the model be a detailed analysis of how human brains are structured but the broadest possible abstraction that can provide meaningful understanding of the nature of thinking. Nor is it intended to build a cohesive theory but to provide the reader with a collection of concepts that will illuminate further thinking about thinking. More detailed models and theories specifically about the brain can be found under the topic of Cognitive Science and connectionism . Behaviour of the Model The characteristic behaviour of the system is shown to create and reinforce patterns. The current set of patterns in the system determine how new experiences are integrated. Attention tends to flow along well worn paths and patterns have large catchment areas. Novel experiences are often lost as attention flows down old paths that are in some way similar to the new experience. Sometimes starting at a different point in an established pattern can lead to a jump out of that pattern ... limitations. From The Mechanism of Mind page 182 blockquote Cquote The limitations of the special ... External links and references DeBono, Edward The Mechanism of Mind ISBN 0224617095 January 1969 Category Philosophy of mind literature Mechanism of the Mind Category 1969 books Mechanism of Mind, The Category Psychology books Mechanism of the Mind Category Consciousness studies Mechanism of the Mind ... more details
In quantum field theory , the GIM mechanism or Glashow Iliopoulos Maiani mechanism is the mechanism by which Flavor changing neutral current flavour changing neutral currents FCNCs are suppressed. It also explains why weak interaction s that change strangeness by 2 &Delta S 2 transitions are suppressed while those that change strangeness by 1 &Delta S 1 transitions are allowed. The mechanism was put forth by Sheldon Lee Glashow , John Iliopoulos and Luciano Maiani in their famous paper Weak Interactions with Lepton Hadron Symmetry published in Physical Review D in 1970. ref cite journal doi 10.1103 PhysRevD.2.1285 author S.L. Glashow, J. Iliopoulos, L. Maiani year 1970 title Weak Interactions with Lepton Hadron Symmetry journal Physical Review D volume 2 pages 1285 bibcode 1970PhRvD...2.1285G issue 7 ref At the time the GIM mechanism was proposed, only three quark s up quark up , down quark down , and strange quark strange were thought to exist. Glashow and James Bjorken predicted a fourth quark in 1964, ref cite journal author B.J. Bjorken, S.L. Glashow year 1964 title Elementary particles and SU 4 journal Physics Letters volume 11 pages 255 257 doi 10.1016 0031 9163 64 90433 0 bibcode 1964PhL....11..255B issue 3 ref but there was little evidence for its existence. The GIM mechanism however, required the existence of a fourth quark, and the prediction of the charm quark is usually credited to Glashow, Iliopoulos, and Maiani. References reflist Further reading cite book author A. Das, T. Ferbel year 2003 chapter Standard Model and Confrontation with Data title Introduction to Nuclear and Particle Physics pages 345 ff edition 2nd publisher World Scientific isbn 981 238 744 7 cite journal author J. Iliopoulous year 2010 title Glashow Iliopoulos Maiani mechanism journal Scholarpedia volume 5 issue 5 pages 7125 doi 10.4249 scholarpedia.7125 cite web author B. Popescu date February 2006 title Weak Interactions 1 url http www.physics.uc.edu popescu ppt weak1.ppt work Physics ... more details
notability Music date February 2010 primarysources date February 2010 Mechanism is a death metal band from Canada Vancouver, British Columbia . Their debut album is called Inspired Horrific and combines death metal with progressive metal progressive . Line up Gene Hoglan Drums Devin Townsend , Daemon band Daemon Dnk , Dark Angel band Dark Angel USA , Death , Dethklok , Forbidden band Forbidden USA , Just Cause band Just Cause , Meldrum , Naphobia, Old Man s Child , Phantasm band Phantasm , Pitch Black Forecast , Strapping Young Lad , Tenet band Tenet , Testament band Testament , Unearth , Wargod USA , Zimmers Hole , Fear Factory Chris The Heathen Valagao Vocals Zimmers Hole , The Berzerker , The Kill Can Kris Schulz Guitar Bryan Somerville Guitar, Samples Markus McCallum Bass Discography 2009 Inspired Horrific References See Wikipedia Footnotes on how to create references using ref ref tags which will then appear here automatically Reflist External links http www.mechanismmetal.com Official website http www.myspace.com mechanismarmy Myspace page http www.metal archives.com band.php?id 3540273324 Mechanism Metal archives DEFAULTSORT Mechanism Band Category Canadian death metal musical groups ... more details
Image NAMA Machine d Anticyth re 1.jpg right thumb 280px The Antikythera mechanism main fragment The Antikythera mechanism IPAc en icon n t k r Respell ANT i ki THEER or IPAc en n ... www.antikythera mechanism.gr project overview The Antikythera Mechanism Research Project , The Antikythera Mechanism Research Project. Retrieved 2007 07 01 Quote The Antikythera Mechanism is now understood .... The Antikythera Mechanism A Calendar Computer from ca. 80 B. C., Derek de Solla Price, Transactions ... , publisher PUBLICATIONS GR ref but found no additional remains of the Antikythera mechanism. Professor Michael Edmunds of Cardiff University who led the most recent study of the mechanism said ... this has done it extremely carefully ... in terms of historic and scarcity value, I have to regard this mechanism ... is exactly right ... in terms of historic and scarcity value, I have to regard this mechanism as being .... Origins see also Antikythera wreck The mechanism is the oldest known complex scientific calculator ... Were there others? & 124 The Antikythera Mechanism Research Project publisher Antikythera mechanism.gr ... Solla Price concluded from gear settings and inscriptions on the mechanism s faces that the mechanism .... The Antikythera Mechanism A Calendar Computer from ca. 80 B. C. Transactions of the American ... is that the mechanism itself was made in the Greek speaking world. All the instructions of the mechanism ... the astronomer Hipparchus was the engineer who designed it since it contains a lunar mechanism which ... mechanism The Antikythera Mechanism Research Project The Antikythera Mechanism Research Project ... for the mechanism originated in the colonies of Ancient Corinth Corinth , which might imply ... s mechanism. image2 Antikythera model front panel Mogi Vicentini 2007.JPG caption2 Front ... equilateral triangle s. When a date was entered via a crank now lost , the mechanism calculated the position ...? publisher Antikythera mechanism.gr date 2007 07 27 accessdate 2011 08 24 ref The mechanism ... more details
Price mechanism is an economic term that refers to the buyers and sellers who negotiate prices of goods or services depending on demand and supply . ref Shaw, W.H. 2008 . Business Ethics Sixth Edition. Belmont, Ca Thomson Wadsworth ref A price mechanism or market based mechanism refers to a wide variety of ways to match up buyers and sellers through price rationing. An example of a price mechanism uses announced bid and ask prices. Generally speaking, when two parties wish to engage in a trade , the purchaser will announce a price he is willing to pay the bid price and seller will announce a price he is willing to accept the ask price . The main advantage of such a method is that conditions are laid out in advance and transactions can proceed with no further permission or authorization from any participant. When any bid and ask pair are compatible, a transaction occurs, in most cases automatically. Effects of Price Mechanism Price Mechanism causes many changes in the economic environment ... curve . ref Pettinger, T. n.d. . Price Mechanism in the Long Term. In Economics Help. Retrieved April 10, 2011, from http www.economicshelp.org microessays equilibrium price mechanism long term.html ref An example of price mechanism in the long term is the oil crisis during the 1970s. The crisis caused ... of oil. Price Mechanism affects every economic situation in the long term. Another good example of price mechanism in the long run is fuel for cars. If fuel becomes more expensive, then the demand ... fuel and electrical cars. ref Pettinger, T. n.d. . Price Mechanism in the Long Term. In Economics ... mechanism long term.html ref Stock market When trading in a stock market , a person who has Share ... or nothing . Auctions Main Auction An auction is a price mechanism where bidders can make competing ... theorists assert that, with appropriate controls, a market mechanism can replace a hierarchy , even ... system References reflist DEFAULTSORT Price Mechanism Category Economics ... more details
orphan date May 2008 In acoustics , Lighthill mechanism refers to the generation of sound by Turbulence turbulent fluid motions, as proposed by James Lighthill Sir James Lighthill in 1952. See also Aeroacoustics References M. J. Lighthill, On Sound Generated Aerodynamically. I. General Theory, Proc. R. Soc. Lond. A 211 1952 pp. 564 587. M. J. Lighthill, On Sound Generated Aerodynamically. II. Turbulence as a Source of Sound, Proc. R. Soc. Lond. A 222 1954 pp. 1 32. Category Acoustics ... more details
The ANRORC mechanism in organic chemistry describes a special type of substitution reaction . ANRORC stands for A ddition of the N ucleophile, R ing O pening, and R ing C losure in nucleophilic attack on ring systems ref The SN ANRORC mechanism a new mechanism for nucleophilic substitution Henk C. Van der Plas Acc. Chem. Res. 1978 11 12 pp 462 468 DOI 10.1021 ar50132a005 ref ref cite journal title S N ANRORC reactions in azaheterocycles containing an inside leaving group author Vanderplas H. C. journal Advances in Heterocyclic Chemistry volume 74 pages 9 86 year 1999 doi 10.1016 S0065 2725 08 60809 0 isbn 978 0 12 020774 9 series Advances in Heterocyclic Chemistry ref ref cite journal title S N ANRORC reactions in azaheterocycles containing an inside leaving group author Vanderplas H. C. journal Advances in Heterocyclic Chemistry volume 74 pages 87 151 year 1999 doi 10.1016 S0065 2725 08 60810 7 isbn 978 0 12 020774 9 series Advances in Heterocyclic Chemistry ref and it helps to explain product formation and distribution in some nucleophilic substitution s especially in heterocyclic compound s. This reaction mechanism has been extensively studied in reactions of metal amide nucleophiles such as sodium amide and substituted pyrimidine s for instance 4 phenyl 6 bromopyrimidine 1 in ammonia at low temperatures. The main reaction product is 4 phenyl 6 aminopyrimidine 2 with the bromine substituent replaced by an amine . This rules out the formation of an aryne intermediate A which would also give the 5 substituted isomer. Image ANRORC overview.png center 450px ANRORC overview The exclusion of a second intermediate in this reaction, the Meisenheimer complex B in favor of the ring opened ANRORC intermediate is based on several pieces of evidence. With other amines such as piperidine ... and this is again explained by the ANRORC mechanism where the ring opened intermediate 4 is a tautomer .... The Zincke reaction is a named reaction involving an ANRORC mechanism. References div class references ... more details
2011 Mechanism is the belief that natural wholes principally living things are like machines or artifacts ... parts or an external influence on the parts. ref CathEncy wstitle Mechanism ref Mechanism is opposed ... Physics II. ref and more recently elaborated as vitalism . The doctrine of mechanism in philosophy comes ... as universal mechanism and anthropic mechanism. Universal mechanism The older doctrine which we have called universal mechanism is a theory about the nature of the universe, closely linked with the early modern version of materialism . Universal mechanism held that the universe is best understood ... of matter. It follows that mechanism is a form of thoroughgoing determinism if all phenomena can ... laws. Indeed, the determinism implied by universal mechanism is even stronger than clockwork. Whereas the mechanism of a clock may cease to work predictably as its parts break down, the parts of the system in universal mechanism are nothing less than everything in the universe &mdash anything that they broke ... of universal mechanism is found in the opening passages of the Leviathan book Leviathan by Thomas ... as a paradigmatic enemy of materialism and mechanism and in that respect quite the opposite of Hobbes ... of all forms of mechanism . Nevertheless, his understanding of corporeal substance was thoroughly ... to the older cadre of mechanists, since mechanism originally sought to explain all ... also French materialism . Anthropic mechanism The debate over anthropic mechanism seems here to stay, at least for the time being. The thesis in anthropic mechanism is not that everything can be completely ... of the material world because he argued that mechanism and the notion of a mind were logically ..., in particular &mdash and free will . Anti mechanists argue that anthropic mechanism ... mechanism implies determinism about human action, which they argue is incompatible with our ... in one of two ways. In the first, they agree with anti mechanists that mechanism conflicts with some ... more details
Infobox musical artist name Blasted Mechanism image Blasted Mechanism 12 by JPCasainho.jpg caption background group or band origin Lisbon , Portugal genre Alternative rock br World music years active 1995&ndash present label Toolateman website http www.blastedmechanism.com current members Guitshu Vocals br Valdjiu Bambuleco, Kalachakra br Ary Bass br Zymon Electric guitar, sitar, keyboards br Fred Stone Drums br Winga Percussion past members Miguel Cardona Guitar br Salvatori Tiliba Didgeridoo br Castora Percussion br Karkov Vocals Blasted Mechanism is a Portugal Portuguese electro rock band known for its highly theatrical live shows involving elaborated alien themed costumes as a backdrop to their music. br The band was founded in 1995 by Karkov and Valdjiu. New members joined later to form the current line up. As they like to put it they weren t created but invented , blasting into the Portuguese music scene with a very different sound and visuals. br They quickly became known for their extravagant audiovisual performances involving alien and tribal looking musicians and an irreverent, upbeat attitude. Over the years, they developed a unique musical style that mixes alternative rock, electronic music, reggae, dub and folk. Discography Main Blasted Mechanism discography Blasted Mechanism Demo 1994 unknown Blasted Mechanism EP 1996 Swinging with the Monkeys Calamidad The Atom Bride theme Balayhashi 1998 Swinging with the Monkeys Calamidad The Atom Bride theme Polaroid Gators from Congo SingleMix 00 Swinging with the Monkeys 00 Mix by Ragmanan Saturnia Spasm pink moon mix by saturnia Danka Danka mix by toolateman Plasma 1999 Oh Landou The Art of Fitting Zapping Mahdathai Connection Spasm 18 Strings Karkow Blue Mood Nazka SingleMix 01 Karkov nadabrovichka mix radio edit dj ... alternative rock groups de Blasted Mechanism es Blasted Mechanism fr Blasted Mechanism pt Blasted Mechanism ... more details
Context date October 2009 I hope what I have provided is enough to remove this tag Image Sarrus linkage anim 360x400.gif thumb 360px right A Sarrus linkage. An overconstrained mechanism is a linkage that has more degrees of freedom than is predicted by the Chebychev Gr bler Kutzbach criterion mobility formula . The mobility formula evaluates the degree of freedom of a system of rigid bodies that results when constraints are imposed in the form of joints connecting the links. If the links of the system move in three dimensional space, then the mobility formula is math M 6 N 1 j sum i 1 j f i, math where N is the number of links in the system, j is the number of joints, and f sub i sub is the degree of freedom of the i sup th sup joint. If the links in the system move planes parallel to a fixed plane, or in concentric spheres about a fixed point, then the mobility formula is math M 3 N 1 j sum i 1 j f i. math If a system of links and joints has mobility M 0 or less, yet still moves, then it is called an overconstrained mechanism . Sarrus linkage A well known example of an overconstrained mechanism is the Sarrus linkage Sarrus mechanism , which consists of six bars connected by six hinged joints. A general spatial linkage formed from six links and six hinged joints has mobility math M 6 N 1 j sum i 1 j f i 6 6 1 6 6 0, math and is therefore a structure. The Sarrus mechanism has mobility M 1, rather than M 0, which means it has a particular set of dimensions that allow movement. ref K. J. Waldron, Overconstrained Linkage Geometry by Solution of Closure Equations Part 1. Method of Study, Mechanism and Machine Theory, Vol. 8, pp. 94 104, 1973. ref Bennett s linkage Another example of an overconstrained mechanism is Bennett s linkage, which consists of four links connected by four revolute joints. A general spatial linkage formed from four links and four hinged joints has mobility math M 6 N 1 j sum i 1 j f i 6 4 1 4 4 2, math which is a highly constrained system. As in th ... more details
orphan date July 2010 A dispute mechanism is a structured process ref cite web author By Kyle url http baseswiki.org en Category Mechanism title BASESwiki Dispute Mechanism Database publisher Baseswiki.org date 2010 05 11 accessdate 2010 05 17 ref that addresses disputes or grievances that arise between two or more parties engaged in business, legal, or societal relationships. Dispute mechanisms are used in dispute resolution , and may incorporate conciliation , conflict resolution , mediation , and negotiation . Otherwise known as grievance mechanisms , dispute mechanisms are typical non judicial ref name unglobalcompact1 cite web url http www.unglobalcompact.org docs issues doc human rights Human Rights Working Group 29Apr08 7 Report of SRSG to HRC.pdf title 0812861 format PDF date accessdate 2010 05 17 ref in nature, meaning that they are not resolved within the court of law. According to research produced by the non judicial grievance mechanism task force of John Ruggie, Special Representative of Business and Human Rights to the United Nations, those who design and oversee non judicial ... , locally based grievance resolution mechanism s provide a promising avenue by offering a reliable ... 05 17 ref Generally, it is agreed that a well functioning grievance mechanism should Provides a predictable ..., such mechanisms must at a minimum be Legitimate a mechanism must have clear, transparent and sufficiently ... can interfere with the fair conduct of that process Accessible a mechanism must be publicized to those ... a mechanism must provide a clear and known procedure with a time frame for each stage and clarity ... the implementation of any outcome Equitable a mechanism must ensure that aggrieved parties have reasonable ... on fair and equitable terms Rights compatible a mechanism must ensure that its outcomes and remedies accord with internationally recognized human rights standards Transparent a mechanism must provide ... references External links http baseswiki.org en Category Mechanism Database of Dispute Mechanisms ... more details
Context date February 2009 Confusing date September 2007 In biology and in science in general a mechanism is a complex object system or, more generally, a Process science process that produces a regular phenomenon. For example, natural selection is one of the mechanisms of biological evolution , other being genetic drift , biased mutation, and gene flow competition , predation , Parasitism host parasite interactions , etc. are mechanisms of Community ecology community structuring and membrane depolarization is the mechanism of Action potential transmission of neural signals . Accordingly, descriptions of mechanisms are a part of an answer to a question about why some object or process occurred. In other words, descriptions of mechanisms occur in explanations of biological facts. Thus, mechanism refers back from the object or process, along some chain of causation. No description of mechanism is ever complete. For example, the mechanism of sunlight might include the rotation of the earth, the Earth s orbit, the sun, nuclear reactions, heat, temperature, radiation emission, electromagnetic theory about the propagation of light, formation of the solar system, etc. Compare this to the Function biology function of the object or process, which looks forward along some chain of causation to a goal or evolutionary success. ref Dusenbery, David B. 1992 . Sensory Ecology , pp.7 8. W.H. Freeman., New York. ISBN 0 7167 2333 6. ref Many characterizations definitions of mechanisms in the philosophy of science biology have been provided in the past decades. For example, one influential characterization ... describing the components of a mechanism M that is productive of or causes P . Indeed, whereas ... to be identical. This is to say, to explain a mechanism M just is to describe it specify its components ... mechanism, its start conditions . Characterization The MDC characterization is mechanisms are entities ... 2007 Notes and references Reflist DEFAULTSORT Mechanism Biology Category Biology es Mecanismo filosof a ... more details
molecules proved to be remarkably fortuitous. Says who date February 2011 Proton transport mechanism and proton hopping mechanism The Grotthuss mechanism is now a general name for the proton hopping mechanism. In liquid water the Hydronium Solvation solvation of the excess proton is idealized by two ... cation . While the transport mechanism is believed to involve the inter conversion between these two solvation structures, the details of the hopping and transport mechanism is still debated. Currently ... NMR data, ref cite journal title The Grotthuss mechanism first Noam last Agmon journal Chem. Phys. Lett ... hydrogen bond strengths, but mechanism 1 might be the better candidate of the two. ref cite ... ref The anomalous diffusion of protons The Grotthuss mechanism, along with the relative lightness ... H sup sup td td 3.62 10 sup &minus 3 sup td tr table References references DEFAULTSORT Grotthuss Mechanism ... more details
In celestial mechanics , the Kozai mechanism , or the Lidov Kozai mechanism , causes a periodic exchange between the inclination and Orbital eccentricity eccentricity of an orbit. That is, libration oscillation about a constant value occurs in the argument of pericenter . The effect was described in 1961 by the Soviet specialist in space dynamics Michael Lidov Russian while analysing the orbits of artificial and natural satellites of planets, and in 1962 by the Japanese astronomer Yoshihide Kozai while analyzing the orbits of the asteroid s. Since then this effect has been found to be an important factor shaping the orbits of irregular satellite s of the planets, trans Neptunian object s, and a few extrasolar planets and multiple star system s. Kozai resonance For an orbiting body in the restricted three body problem with Orbital eccentricity eccentricity math e , math and inclination math i , math relative to the fundamental plane, the following value is conserved math sqrt 1 e 2 cos i math Which is to say that orbital eccentricity can be traded for inclination, and perturbation may lead to an interchange between the two. Thus, near circular, highly inclined orbits can become very eccentric in exchange for lower inclination. Since increasing eccentricity while keeping the semimajor axis constant reduces the distance between the objects at periapsis , this mechanism can cause comets to become Sungrazing comet sungrazing . Typically, for the objects in low inclination orbits, the perturbations result in the precession of the argument of pericenter . Starting with some value of the angle, the precession is replaced by libration around 90 or 270 , and the pericenter ... see also Jacobi integral and Tisserand s relation . Consequences The Kozai mechanism causes the argument ... 0 521 57597 4 Innanen et al. , The Kozai Mechanism and the stability of planetary orbits in binary ... articles kozai.html Kozai mechanism visualization astronomy stub Category Celestial mechanics ... more details
The myogenic mechanism is how artery arteries and arteriole s react to an increase or decrease of blood pressure to keep the blood flow within the blood vessel constant. The smooth muscle of the blood vessels reacts to the stretching of the muscle by opening ion channels, which cause the muscle to depolarization depolarize , leading to muscle contraction. This significantly reduces the volume of blood able to pass through the lumen anatomy lumen , which reduces blood flow through the blood vessel. Alternatively when the smooth muscle in the blood vessel relaxes, the ion channels close, resulting in vasodilation of the blood vessel this increases the rate of flow through the lumen. This system is especially significant in the kidneys , where the glomerular filtration rate the rate of blood filtration by the nephron is particularly sensitive to changes in blood pressure. However, with the aid of the myogenic mechanism, the glomerular filtration rate remains very insensitive to changes in human blood pressure. External links http www.ncbi.nlm.nih.gov entrez query.fcgi?db pubmed&cmd Retrieve&dopt AbstractPlus&list uids 8087076&query hl 5&itool pubmed DocSum Moore L.C., A. Rich, and D. Casellas. Ascending myogenic autoregulation interactions between tubuloglomerular feedback and myogenic mechanisms.. Bull. Math. Biol. 56 391 410, 1994. med stub Cardiovascular physiology Category Cardiovascular physiology es Mecanismo miog nico ... more details
Image Stanley Reiter MDdiagram.png thumb 345px The Stanley Reiter diagram above illustrates a game of mechanism .... In games of mechanism design, agents send messages math M math in a game environment math ... choice function math f theta math . Mechanism design sometimes called reverse game theory ref http staff.science.uva.nl ulle teaching mas slides mas mechanism design 4up.pdf Multiagent Systems , from ... Such a game is called a game of mechanism design and is usually solved by motivating agents to disclose ... to Leonid Hurwicz , Eric Maskin , and Roger Myerson for having laid the foundations of mechanism design ... because it is in his interest to distort the truth. Fortunately, in mechanism design the principal ... like. Absent mechanism design theory the principal s problem would be difficult to solve. He would ... to mechanism design, and particularly the revelation principle, the principal need only consider games in which agents truthfully report their private information. Foundations Mechanism A game of mechanism ... chose. The timing of the game is The principal commits to a mechanism math y math that grants ... profile math hat theta math The mechanism is executed agents receive outcome math y hat theta ... X math In contrast a mechanism maps the reported type profile to an outcome again, both a goods ... Revelation principle main Revelation principle A proposed mechanism constitutes a Bayesian game a game ... result called the revelation principle, no matter the mechanism a designer can ref In unusual ... a mechanism that would induce agents to choose the same equilibrium. The easiest one to define is for the mechanism ... rightarrow S Theta rightarrow Y math Under such a mechanism the agents of course find it optimal to reveal type since the mechanism plays the strategies they found optimal anyway. Formally, choose ... left s i theta , s i theta i , theta i right math Implementability The designer of a mechanism generally hopes either to design a mechanism math y math that implements a social choice function to find ... more details
A mechanism is a device designed to transform input forces and movement into a desired set of output forces and movement. Mechanisms generally consist of moving components such as gear s and gear train s, belt and chain drives, cam and cam follower follower mechanisms, and linkage mechanical linkage s as well as friction devices such as brakes and clutches, and structural components such as the frame, fasteners, bearings, springs, lubricants and seals, as well as a variety of specialized machine ..., his use of machine is generally interpreted to mean mechanism . The combination of force and movement defines Power physics power , and a mechanism is designed to manage power in order to achieve a desired set of forces and movement. A mechanism is usually a piece of a larger process or mechanical system . Sometimes an entire machine mechanical machine may be referred to as a mechanism. Examples are the Steering steering mechanism in a automobile car , or the winding mechanism of a watch wristwatch ... of the actuator mechanism for an aircraft landing gear. Types of Mechanisms From the time of Archimedes ... called kinematic pair s, or joints. In order to use geometry to study the movement a mechanism, its ... to be unchanged as the mechanism moves, that is the link does not flex. Thus, the relative movement ..., as well as pure rolling without slipping and point contact with slipping. A mechanism is modeled ... trains File Gears animation.gif thumb gear Gears are a type of mechanism. The transmission of rotation between contacting toothed wheels can be traced back to the Antikythera mechanism of Greece and the South ... surfaces of the cam and cam follower follower determines the movement of the mechanism. Linkages ... bar linkage. Flexure mechanisms A flexure mechanism consisted of a series of rigid bodies connected ... Balanced hinge lever mechanism http www.scribd.com doc 441240 Five hundred and seven mechanical ... of hundreds of mechanism models. engineering stub I hope it is no longer considered a stub ... more details
Ei elimination Elimination Internal in organic chemistry is a special type of elimination reaction in which two Vicinal chemistry vicinal substituent s on an alkane framework leave simultaneously in a single step to form an alkene in a syn elimination ref J. March Advanced Organic Chemistry 3rd Ed. ISBN 04718544727 ref . In regular eliminations this reaction would involve a base or would in many cases involve charged intermediates. This reaction mechanism is often found in pyrolysis . Examples are eliminations involving the Burgess reagent , Hofmann elimination with some sterically hindered substrates , the Cope elimination and ester pyrolysis . References reflist Category Reaction mechanisms es Mecanismo Ei ... more details
The mechanism is the driving mechanism behind the changes in luminosity of many types of pulsating variable stars. Here, the Greek letter kappa is used to indicate the radiative opacity optics opacity at any particular depth of the stellar atmosphere. In a normal star, an increase in compression of the atmosphere causes an increase in temperature and density this produces a decrease in the opacity of the atmosphere, allowing heat energy to escape more rapidly. The result is an equilibrium condition where temperature and pressure are maintained in a balance. However, in cases where the opacity increases with temperature, the atmosphere becomes unstable against pulsations. ref name maeder2009 If a layer of a stellar atmosphere moves inward, it becomes denser and more opaque, causing heat flow to be checked. In return, this heat increase causes a build up of pressure that pushes the layer back out again. The result is a cyclic process as the layer repeatedly moves inward and then is forced back out again. ref name de boer seggewiss2008 Stellar non adiabatic pulsation resulting from the mechanism occurs in regions where hydrogen and helium are partly ionized, or where there are negative hydrogen ions. An example of such a zone is in RR Lyrae variable s where the partial second ionization of helium occurs. ref name maeder2009 Hydrogen ionization is most likely the cause of pulsation activity in Mira variable s, Ap and Bp star rotating Ap stars and Pulsating white dwarf ZZ Ceti variables . In Beta Cephei variable s, stellar pulsations occur at a depth where the temperature reaches approximately 200,000 K and there is an abundance of iron. The increase in the opacity of iron at this depth is known as the Z bump, where Z is the astronomical symbol for elements other than hydrogen and helium. ref name leblanc2010 References reflist refs ref name de boer seggewiss2008 ... publisher John Wiley and Sons isbn 0470699574 ref DEFAULTSORT Mechanism Category Variable stars ... more details
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