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External forcing of spiral waves
Chaos: An Interdisciplinary Journal of Nonlinear Science, 1994The effect of an external rhythm on rotating spiral waves in excitable media is investigated. Parameters of the unperturbed medium were chosen, such that the organizing spiral tip describes meandering (hypocyclic) trajectories, which are the most general shape for the experimentally observed systems.
Vladimir S., Zykov +2 more
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Grappling with external forces
Strategic Direction, 2022Purpose This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context.
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Stochastic resonance without external periodic force
Physical Review Letters, 1993A model of a two-dimensional autonomous system subject to external noise is investigated. Without noise the system has a stable limit cycle in a certain region of control parameter. Various noise-induced effects have been found numerically, such as a noise-induced frequency shift in the presence of the deterministic limit cycle, and noise-induced ...
, Gang, , Ditzinger, , Ning, , Haken
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VIBRATION OF EXTERNALLY-FORCED FROUDE PENDULUM
International Journal of Bifurcation and Chaos, 1999Motion of self-excited Froude pendulum under external forcing were analyzed. Differential equation of motion includes the nonlinear damping term of Rayleigh's type. Using multiple time scale method and Lyapunov theory, vibrations, synchronization and stability of the system were examined.
Litak, Grzegorz +3 more
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La colonisation, « force externe »
Tiers-Monde, 1972Bonnain-Moerdijk Rolande. La colonisation, « force externe ». In: Tiers-Monde, tome 13, n°50, 1972. Modernisations et « espaces derives », sous la direction de Milton Santos. pp. 409-434.
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1984
A body moving through a fluid, which we assume to be incompressible and inviscid, will induce velocities and pressures in this fluid. Hence the body will experience forces and moments caused by the integrated action of the pressures on its boundary. Inversely by the law, action equals reaction, the body will exert forces on the fluid.
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A body moving through a fluid, which we assume to be incompressible and inviscid, will induce velocities and pressures in this fluid. Hence the body will experience forces and moments caused by the integrated action of the pressures on its boundary. Inversely by the law, action equals reaction, the body will exert forces on the fluid.
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Measurement of external forces
2017Quantitative assessment of external forces is important to understand human movement. These external forces are applied when there is a contact between the individual and the immediate environment either through direct contact or through indirect contact via sports equipment or supporting devices such as prosthetics, orthotics or wheelchairs. Force and
Nachiappan Chockalingam, Aoife Healy
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American Journal of Physics, 1954
Ambiguity in the statement of Newton's first law of motion occurs in most introductory physics texts. This is due to vagueness or inconsistency in the use of the word body. To make the statement of the law plain in meaning three revised wordings are available.
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Ambiguity in the statement of Newton's first law of motion occurs in most introductory physics texts. This is due to vagueness or inconsistency in the use of the word body. To make the statement of the law plain in meaning three revised wordings are available.
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Diffusion Under External Forces
2001This short chapter is devoted to the relation between diffusion and mobility. Indeed, until now, the process of mass redistribution was attributed to mixing on a microscale. We now ask what effects force fields can have on this redistribution, as they affect particle flows through a drift or mobility term, in addition to the usual diffusion term.
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Sinai Billiards Under Small External Forces
Annales Henri Poincaré, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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