Results 191 to 200 of about 59,907 (228)

KNEESENSE: a low-cost wearable system with hydraulic filament sensing for real-time knee rehabilitation monitoring. [PDF]

open access: yesSci Rep
Phan NA   +9 more
europepmc   +1 more source

Systolic blood pressure estimation method using electrocardiogram RRI data. [PDF]

open access: yesSci Rep
Fujita E   +13 more
europepmc   +1 more source

Classification of the centers, their cyclicity and isochronicity for a class of polynomial differential systems generalizing the linear systems with cubic homogeneous nonlinearities

open access: closedJournal of Differential Equations, 2009
Consider the system \[ \dot z=(\lambda+i)z+ (z\overline z)^{(d-3)/2}(Az^3+Bz^2\overline z+Cz\overline z^2+D \overline z^3),\tag{1} \] where \(z=x+ iy\), \(A,B,C,D\) are complex numbers, \(d\geq 3\) is an arbitrary odd integer. Theorem 1. System (1) has a center at the origin if and only if one of the following conditions holds: (c.1) \(\lambda=b_1=3A ...
Jaume Llibre, Clàudìa Valls
exaly   +5 more sources

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