Results 281 to 290 of about 45,262,696 (341)

On the role of frustration in excitable systems

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2010
We study the role of frustration in excitable systems that allow for oscillations either by construction or in an induced way. We first generalize the notion of frustration to systems whose dynamical equations do not derive from a Hamiltonian. Their couplings can be directed or undirected; they should come in pairs of opposing effects like attractive ...
Pablo, Kaluza, Hildegard, Meyer-Ortmanns
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Adiabatic excitation of multilevel systems

Physical Review A, 1985
We derive and discuss the behavior of several multilevel models relevant to the problem of molecular multiphoton excitation under the action of a quasimonochromatic laser field, the amplitude of which rises slowly and falls rapidly on a certain internal time scale.
, Peterson, , Cantrell
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Emulation of IEEE Excitation System Models Using Micro-Alternator’s Excitation System

2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), 2020
This paper proposes an approach to emulate the behaviour of different IEEE excitation system models or industry provided excitation system models using a micro-alternator in the laboratory. An IGBT based buck converter is used as an exciter for the alternator.
Tanmay Mishra, Gurunath Gurrala
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Controllability of Excitable Systems

Bulletin of Mathematical Biology, 2001
Mathematical models of cell electrical activity typically consist of a current balance equation, channel activation (or inactivation) variables and concentrations of regulatory agents. These models can be thought of as nonlinear filters whose input is some applied current I (possibly zero) and output is a membrane potential V. A natural question to ask
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Exciters and Systems of Excitation

Transactions of the American Institute of Electrical Engineers, 1920
IN laying out excitation systems for central power stations continuity of service is the primary requirement. First cost and economy in operation are secondary requirments which must be given due weight.
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Solitonlike excitations in biological systems

Physical Review A, 1985
A model for solitonlike excitation in DNA is presented and assessed in the context of previous models of collective excitations in other biological systems. A qualitative analysis describes the mechanisms of some DNA function, in particular opening of DNA base pairs to initiate protein synthesis.
, Balanovski, , Beaconsfield
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Excitation and Conduction in the Nervous System

Annual Review of Physiology, 1953
It is appropriate to open this review by recording the death of Sir Charles Scott Sherrington, on March 4, 1952. The great indebtedness of neurophysi­ ology to him and to his students is amply recognized and has been sketched by one who knew him well (63).
M G, LARRABEE, C, EDWARDS
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A dynamic modelling method of a rotor-roller bearing-housing system with a localized fault including the additional excitation zone

, 2020
Rotor-roller bearing-housing systems (RBHSs) are widely utilized in many industrial machinery, such as aero-engines, high speed trains, wind turbine, etc.
Jing Liu
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Chaotic Behavior in Excitable Systems

Annals of the New York Academy of Sciences, 1990
This paper has dealt with biophysically accurate, or plausible, excitation systems. These are obtained from experiments, and so are complicated, often of high order, and are continually being updated by new experimental results. This is especially true for the excitation equations that represent cardiac tissue.
A V, Holden, M J, Lab
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Muscle fiber excitation system

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2016
Persons unable to exercise due to old age, immobility or medical condition may develop low bone density, decline in muscle contraction, blood pooling or clot. Due to musculoskeletal fragility caution is required in bone and muscle strengthening. Similarly, caution is required to use anticoagulant drug to prevent blood clot due to side effect, and ...
Bertram N. Ezenwa, Thomas Kernozek
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