All articles starting with M
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Modal analysis
Modal analysis is the process of extracting a vibrating system's mode shapes, natural frequencies, damping ratios, and modal masses from measured transfer functions, used to diagnose vibration problems.
Modal coupling
Modal coupling is the interaction between the vibration modes of a mechanical system, where one mode's motion contributes forces on another, making frequency and damping depend on amplitude in nonlinear systems.
Modal dispersion
Modal dispersion, or intermodal dispersion, is the spreading of an optical pulse in time as it travels through multimode fiber, usually limiting bit rate and link length.
Modal jazz
Modal jazz: jazz style improvising on modes rather than chord progressions, defined by slow harmonic rhythm. Pioneered via George Russell's 1953 theory, Miles Davis's "Milestones" (1958) and Kind of Blue (1959), then Coltrane's 1960s work.
Modal Labs
Modal Labs is a New York City AI infrastructure startup founded in 2021 by Erik Bernhardsson that sells a serverless cloud platform for AI workloads like GPU inference.
Modal logic
Modal logic is a family of formal logics extending classical logic with operators for necessity and possibility, plus logics of obligation, time, and belief, originating with C.I. Lewis in 1912.
Modal logic D
Modal logic D, also written KD, adds to K the axiom that what is necessary is possible, making it the modal basis of Standard Deontic Logic.
Modal logic of agency
The modal logic of agency formalizes what agents do, can do, and are responsible for, chiefly through Belnap and Perloff's "seeing to it that" (stit) operator.
Modal realism
Modal realism is the metaphysical thesis that possible worlds are concrete entities like our own world, associated above all with David Lewis's 1986 book On the Plurality of Worlds.
Modal testing
Modal testing is an experimental method in structural dynamics that measures a structure's excitation forces and vibration responses together to extract its natural frequencies, damping ratios, and mode shapes.
Modal verb
Modal verb (modal auxiliary): a verb like can, may, must, shall, will used with another verb to express possibility, necessity, permission, or obligation. English has ten core modals with defective morphology; meanings divide into epistemic, deontic, and dynamic types.
Modal voice
Modal voice, also called the modal register or normal voice, is the vocal register used in everyday speech, produced by vocal folds vibrating as thick, full-mass structures between vocal fry and falsetto.
Modal μ-calculus
The modal μ-calculus is a temporal logic of programs extending modal logic with least and greatest fixed-point operators, used to model check recursive correctness properties.
Modão
Modão is an affectionate Brazilian term for traditional sertanejo music, especially songs popular between the 1950s and 1980s, performed by duos with viola caipira or violão.
Modbus
Modbus is an application-layer messaging protocol for exchanging process data between industrial devices such as PLCs and sensors, developed by Modicon in 1979 and now a de facto standard used by hundreds of vendors.
Modcomp
Modcomp, formally Modular Computer Systems, Inc., was an American minicomputer manufacturer founded in 1970 in Fort Lauderdale, Florida, whose machines ran launch-critical Space Shuttle functions at NASA.
Mode (music)
Mode (music): the arrangement of intervals in a scale with a tonal center. Covers Greek tonoi, the eight medieval church modes, Glarean's twelve-mode system, and major-minor tonality, plus raga and maqam comparisons.
Mode (statistics)
The mode in statistics is the value that occurs most often in a data set, one of the three classical measures of central tendency alongside the mean and the median.
Mode 2
Mode 2 is a science and technology studies concept describing knowledge produced in a context of application by transient teams, contrasted with traditional Mode 1 science.
Mode Analytics
Mode Analytics is a code-first business intelligence platform combining a SQL editor, Python/R notebooks, and dashboards, founded in 2013 in San Francisco by Derek Steer, Benn Stancil, and Josh Ferguson and acquired by ThoughtSpot for $200 million in 2023.
Mode effect
A mode effect is a systematic difference in survey results arising from how data are collected, covering selection effects on who responds and measurement effects on how.
Mode field diameter
Mode field diameter (MFD) measures the transverse extent of light in a single-mode optical fiber, typically larger than the core, and is defined by the Petermann II integral.
Mode filter
The mode filter is a nonlinear image-processing filter that replaces each pixel with the most frequently occurring value among its neighbors, used for denoising and smoothing.
Mode filtering (image processing)
Mode filtering is an image processing filter that replaces each pixel with the most frequent value in its neighborhood, used for noise removal and cleaning classified maps.
Mode of production
Mode of production: Marxist concept for the historically specific organization of production via productive forces and relations of production. Named modes include Asiatic, ancient, feudal, and capitalist; Althusser paired it with social formation.
Mode of transport
A mode of transport is a specific method used to move passengers or goods, each relying on distinct infrastructure, vehicles, operators, and operations, falling into land, water, and air types.
Mode S transponder
A Mode S transponder is an aircraft secondary surveillance transponder that replies selectively, answering only interrogations containing its unique 24-bit address, unlike earlier Mode A/C transponders.
Mode shape
A mode shape is the deformation pattern a structure adopts when vibrating freely at a natural frequency, mathematically the eigenvector of the structure's eigenvalue problem.
Mode-coupling theory
Mode-coupling theory (MCT) is a first-principles theoretical framework describing the slow dynamics of dense liquids, predicting a transition to a nonergodic glassy state from a liquid's static structure alone.
Mode-division multiplexing
Mode-division multiplexing is an optical communication technique that transmits multiple independent data channels over a single fiber by using different spatial modes, extending space-division multiplexing.