Results 231 to 240 of about 2,867,234 (274)

Comprehensive cardiometabolic rehabilitation program for childhood obesity. [PDF]

open access: yesJ Health Popul Nutr
González Concha N   +4 more
europepmc   +1 more source

A Telehealth-Adapted Dementia Caregiver Skills Training Intervention (TeleCARE): Single-Arm Pre-Post Intervention Study. [PDF]

open access: yesJMIR Aging
O'Connor MK   +8 more
europepmc   +1 more source

A Mobile Game Intervention for Young Persons Living With HIV and Depression in Nigeria: Protocol for a Pilot Randomized Controlled Trial.

open access: yesJMIR Res Protoc
Eliazer C   +9 more
europepmc   +1 more source

Center-Focus Problem for Discontinuous Planar Differential Equations

International Journal of Bifurcation and Chaos, 2003
We study the center-focus problem as well as the number of limit cycles which bifurcate from a weak focus for several families of planar discontinuous ordinary differential equations. Our computations of the return map near the critical point are performed with a new method based on a suitable decomposition of certain one-forms associated with the ...
Gasull, Armengol, Torregrosa, Joan
openaire   +1 more source

Monodromy, center–focus and integrability problems for quasi-homogeneous polynomial systems

Nonlinear Analysis: Theory, Methods & Applications, 2010
Among all quasi-homogeneous polynomial vector fields on the plane, the authors characterize which ones are monodromic (that is, admit a Poincaré first return map in a neighborhood of the origin). Among monodromic systems they give conditions that distinguish foci from centers. Finally, they characterize integrability of such systems.
Algaba, A.   +3 more
openaire   +1 more source

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