Results 51 to 60 of about 6,898 (176)
Symbolic Interaction, EarlyView.This study describes the work at an emergency and critical care center, focusing on the collaboration of multiple nurses when moving patients from the outpatient department to the ward. This study is an ethnomethodological ethnography based on fieldwork at a hospital and analysis of video data. The patient transport process is temporally organized into
Hiroki Maeda, Yumi Nishimura
wiley +1 more source
Boreas, EarlyView.We present a 25‐stage reconstruction of the ice‐flow pattern evolution of the Scandinavian Ice Sheet based on mapping and analysis of ~240 000 subglacial lineations and lineation fields across Norway, Sweden, Finland, and parts of NW Russia. Our reconstruction uses a glacial geomorphological inversion approach, in which we generated 611 individual ...
Frances E. G. Butcher +9 more
wiley +1 more source
, 2019 This paper introduces an algorithmic approach to the analysis of bifurcation of limit cycles from the centers of nonlinear continuous differential systems via the averaging method. We develop three algorithms to implement the averaging method.
Bautin Nikolai N. +5 more
core +1 more source
Journal of Cardiovascular Electrophysiology, EarlyView.ABSTRACT Background The left atrial posterior wall (LAPW) is often targeted in atrial fibrillation (AF) ablation due to its shared properties with pulmonary veins. However, substrate‐guided approaches using structural markers have shown inconsistent results.
Michael M. Malaty +7 more
wiley +1 more source
Centers and Isochronous Centers for Two Classes of Generalized Seventh and Ninth Systems [PDF]
Journal of Dynamics and Differential Equations, 2010 We classify new classes of centers and of isochronous centers for polynomial differential systems in R2 of arbitrary odd degree d ≥ 7 that in complex notation z = x + iy can be written as z˙=(λ+i)z+(zz)d−7−2j/2 (Az5+jz2+j+Bz4+jz3+j+Cz3+jz4+j+Dz7+2j), where j is either 0 or 1, λ ∈ R and A,B,C ∈ C. Note that if j = 0 and d = 7 we obtain a special case of
Llibre, Jaume, Valls, Clàudia
openaire +4 more sources
The period functions' higher order derivatives [PDF]
, 2012 We prove a formula for the $n$-th derivative of the period function $T$ in a period annulus of a planar differential system. For $n = 1$, we obtain Freire, Gasull and Guillamon formula for the period's first derivative \cite{FGG}.
Sabatini, Marco
core +2 more sources
The Journal of Physiology, EarlyView.Abstract figure legend Schematic overview of the experimental and computational framework for investigating hiPSC‐CM electrophysiology with MEA systems. The MEA‐based model integrates experimental data with phenotype‐specific ionic models and tissue‐level heterogeneity.
Sofia Botti +2 more
wiley +1 more source
UNIFORM ISOCHRONOUS CENTER OF HIGHER-DEGREE POLYNOMIAL DIFFERENTIAL SYSTEMS
Journal of Applied Analysis & Computation, 2023 Summary: In this paper, we study the uniform isochronous center of a class of more general higher-degree of polynomial differential systems and give the necessary and sufficient conditions for the origin point to be a center. At the same time, we illustrate that under some restrictions, the composition conjecture about these differential systems is ...
openaire +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend Integrated multimodal platform for panoramic cardiac mapping in isolated heart experiments. On the left, an image of the experimental setup during data acquisition showing a Langendorff‐perfused rabbit heart surrounded by three optical cameras (CAM A, B and C) positioned 120° apart, each coupled with high‐power LEDs for panoramic
Jimena Siles +8 more
wiley +1 more source
Bifurcation of limit cycles from quartic isochronous systems
Electronic Journal of Differential Equations, 2014 This article concerns the bifurcation of limit cycles for a quartic system with an isochronous center. By using the averaging theory, it shows that under any small quartic homogeneous perturbations, at most two limit cycles bifurcate from the period ...
Linping Peng, Zhaosheng Feng
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