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Contrasting Propagation of Natural Calls of Two Anuran Species from the South American Temperate Forest
(Public Library Science, 2015)
The acoustic adaptation hypothesis predicts that sound communication signals have an optimal relationship with animals' native environments. However, species sharing a habitat produce signals stratified in the spectral ...
Fitting methods for baryon acoustic oscillations in the Lyman-
(IOP Publishing Ltd and Sissa Medialab srl, 2013-03)
We describe tting methods developed to analyze
uctuations in the Lyman-
forest and measure the parameters of baryon acoustic oscillations (BAO). We apply our
methods to BOSS Data Release 9. Our method is based on ...
Nonlinear ion-acoustic waves supported by an ion beam
(2007)
It is shown that in a plasma composed by electrons, a proton core, and a proton beam propagating along an external magnetic field, finite amplitude left-hand polarized waves propagating backward relative to the beam direction ...
Control of deviations and prediction of surface roughness from micro machining of THz waveguides using acoustic emission signals
(Academic Press-Elsevier, 2017)
By using acoustic emission (AE) it is possible to control deviations and surface quality during micro milling operations. The method of micro milling is used to manufacture a submillimetre waveguide where micro machining ...
Ample active acoustic space of a frog from the South American temperate forest
(2014)
The efficiency of acoustic communication depends on the power generated by the sound source, the attributes of the environment across which signals propagate, the environmental noise and the sensitivity of the intended ...
Acoustic beam modeling of ultrasonic transducers and arrays using the impulse response and the discrete representation methods
(springer, 2011-12)
La respuesta al impulso del potencial de velocidad y los métodos de representación discreta se utilizaron para modelar el campo acústico irradiado por transductores y matrices ultrasónicos. El primer método se ocupa del ...
Nonlinear electrostatic instabilities in the solar wind
(Blackwell Publishing Ltd, 2009)
It is well known that nonlinear electrostatic instabilities can be triggered in a plasma with streaming ion species in the presence of finite-amplitude Alfvén cyclotron waves. The instability occurs when the phase velocity ...
Particle-in-cell simulation of incoherent scatter radar spectral distortions related to beam-plasma interactions in the auroral ionosphere
(Blackwell Publishing Ltd, 2011)
An electrostatic parallel particle-in-cell (EPPIC) code that allows for particle beam injections and multiple boundary conditions is used to investigate the beam-plasma interaction and its manifestations in the incoherent ...
Strong responsiveness to noise interference in an anuran from the southern temperate forest
(Springer-Verlag, 2014)
Animals adopt different strategies to communicate
by means of sound in noisy environments. Some animals
increase, while others decrease, their vocal activity in the
presence of interference. Anuran amphibians from ...
New parametric decays of proton beam-plasma electromagnetic waves
(Blackwell Publishing Ltd, 2002)
Ion beam-plasma interactions are the source of wave activity in several space environments. Therefore the study of these waves and their parametric decays are very important in space physics. Thus we study parametric decays ...