We study some properties of the range of the relativistic pendulum operator P, that is, the set of possible continuous T-periodic forcing terms p for which the equation P x = p admits a T-periodic solution over a T - ...

© 2016 Elsevier Inc. We study the existence of almost periodic solutions for semi-linear abstract parabolic evolution equations with impulse action at state-dependent moments. In particular, we present conditions excluding ...

Pervious concrete pavements are interesting from an environmental and social viewpoint. However, this type of pavement has as the main disadvantage of losing permeability over time by the clogging process. The aim of this ...

In each circadian cycle, a mouse begins its major activity period with discrete wake onset and activity onset events. The precision with which these events are timed in constant darkness was analyzed using the approach ...

We study the existence and multiplicity of periodic solutions for singular ϕ-laplacian equations with delay on time scales. We prove the existence of multiple solutions using topological methods based on the LeraySchauder ...

This paper deals with the discretization and control of an SEIR epidemic model. Such a model describes the transmission of an infectious disease among a time-varying host population. The model assumes mortality from ...

We study some solutions of the Schrodinger equation, i?u?t=H(t)ui?u?t=H(t)u where H(.)H(.) is a periodic time-dependent Hamiltonian acting on a Hilbert space HH.We prove sojourn time estimates, first by means of an extension ...