Results 71 to 80 of about 1,738 (216)
Movement Disorders, Volume 41, Issue 4, Page 992-1003, April 2026.Background Accurate temporal prediction, essential for adaptive motor behavior, relies on corticobasal ganglia circuits. In Parkinson's disease (PD), both motor and non‐motor functions are impaired. Deep brain stimulation (DBS) of the subthalamic nucleus (STN) effectively alleviates motor symptoms, but its effects on non‐motor domains, like temporal ...
Rebecca Burke +5 more
wiley +1 more source
Nielsen number and differential equations
Fixed Point Theory and Applications, 2005 In reply to a problem of Jean Leray (application of the Nielsen theory to differential equations), two main approaches are presented. The first is via Poincaré's translation operator, while the second one is based on the Hammerstein-type solution ...
Jan Andres
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Subharmonic solutions for nonautonomous second-order Hamiltonian systems
Electronic Journal of Differential Equations, 2012 In this article, we prove the existence of subharmonic solutions for the non-autonomous second-order Hamiltonian system $ddot{u}(t)+V'(t,u(t))=0$. Also we study the minimality of their periods, when the nonlinearity $V'(t,x)$ grows faster than $|x ...
Mohsen Timoumi
doaj
Quarterly Journal of the Royal Meteorological Society, Volume 152, Issue 776, April 2026 Part A.Key Findings: An assimilation methodology is established for the Tomorrow.io microwave sounder (TMS) flying on CubeSats in sun‐synchronous and inclined orbits, and in all cloud scenes. The TMS has a significant impact on weather forecast lead times up to 3 days in the Tropics in a research‐quality numerical weather prediction setting, and yields water ...
Jonathan J. Guerrette +3 more
wiley +1 more source
Effect of Voltage Fluctuations on Induction Motor Currents
Scientific Journal of Gdynia Maritime UniversityOne of the types of power quality disturbances met in a power system is voltage fluctuations. Cyclic voltage fluctuations are interconnected with the presence of subharmonics and interharmonics – that is components of frequency less than the fundamental
Marcin Pepliński, Piotr Gnaciński
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Parametric Generation of Subharmonics in a Composite Multiferroic Resonator [PDF]
, 2020 Parametric generation of subharmonics in a composite multiferroic resonator is observed and investigated. The resonator has the form of a disk and contains two mechanically coupled layers, one of which is amorphous ferromagnet Fe-B-Si-C and the other ...
Ekonomov, N. A. +5 more
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Subharmonic and multiple subharmonic solutions for second order differential systems
Differential and Integral Equations, 2003 The authors seek for subharmonic solutions of a system of second-order differential equations in \(\mathbb R^N\) of the form \[ \ddot u(t)+G'(u(t))=f(t) \quad \text{for } t\in \mathbb R, \tag{1} \] where \(N\) is a natural number, \(f\in C(\mathbb R,\mathbb R^N)\) is \(T\)-periodic, \(G\in C^2(\mathbb R^N,\mathbb R)\) is nonconvex, \(\ddot u={d^2u\over
Hirano, Norimichi, Shioji, Naoki
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Effect of Rectangular Voltage Fluctuations on Currents of Single-Phase Induction Motors
Scientific Journal of Gdynia Maritime UniversityVarious power quality disturbances commonly occur in a power system, including voltage fluctuations. These can be analysed as simultaneous occurrences of voltage subharmonics and interharmonics of various frequencies – components of frequency less than ...
Marcin Pepliński, Piotr Gnaciński
doaj +1 more source
Subharmonic versions of Fatou’s theorem [PDF]
Proceedings of the American Mathematical Society, 1971 A theorem of Fatou concerning the boundary behavior of bounded harmonic functions in the unit disk is extended to normal subharmonic functions. A question—which has been answered in the normal holomorphic and normal harmonic cases—concerning existence of Fatou points for normal subharmonic functions is posed.
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On the Subharmonics in Nonlinear Rolling
, 1984 In this paper, the existence of subharmonic oscillations in the rolling motion is investigated. To this end, the roll motion is described by a mathematical model nonlinear both in the restoring and in the damping.
FRANCESCUTTO, ALBERTO +2 more
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