Results 21 to 30 of about 531,139 (281)

Genetics of dispersal [PDF]

open access: yesBiological Reviews, 2017
ABSTRACTDispersal is a process of central importance for the ecological and evolutionary dynamics of populations and communities, because of its diverse consequences for gene flow and demography. It is subject to evolutionary change, which begs the question, what is the genetic basis of this potentially complex trait?
Saastamoinen, Marjo   +21 more
openaire   +9 more sources

Dispersive CFT sum rules

open access: yesJournal of High Energy Physics, 2021
We give a unified treatment of dispersive sum rules for four-point correlators in conformal field theory. We call a sum rule “dispersive” if it has double zeros at all double-twist operators above a fixed twist gap.
Simon Caron-Huot   +3 more
doaj   +1 more source

Jacobi Polynomials, Bernstein-type Inequalities and Dispersion Estimates for the Discrete Laguerre Operator [PDF]

open access: yes, 2018
The present paper is about Bernstein-type estimates for Jacobi polynomials and their applications to various branches in mathematics. This is an old topic but we want to add a new wrinkle by establishing some intriguing connections with dispersive ...
Koornwinder, Tom   +2 more
core   +3 more sources

Broadband absorber with dispersive metamaterials

open access: yesNanophotonics, 2023
A broadband absorber that utilizes a dispersive metamaterial and covers the entire microwave X-band (8–12 GHz) is proposed in the present study. An ideal absorber attached to the surface of a perfect electric conductor requires the permittivity of the ...
Han WonHeum, Park Q-Han
doaj   +1 more source

Spatial-mode-interaction-induced dispersive-waves and their active tuning in microresonators [PDF]

open access: yes, 2016
The nonlinear propagation of optical pulses in dielectric waveguides and resonators provides a laboratory to investigate a wide range of remarkable interactions. Many of the resulting phenomena find applications in optical systems.
Vahala, Kerry   +3 more
core   +3 more sources

A Realistic FDTD Numerical Modeling Framework of Ground Penetrating Radar for Landmine Detection

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
A three-dimensional (3-D) finite-difference time-domain (FDTD) algorithm is used in order to simulate ground penetrating radar (GPR) for landmine detection.
Iraklis Giannakis   +2 more
doaj   +1 more source

Refraction of dispersive shock waves [PDF]

open access: yes, 2012
We study a dispersive counterpart of the classical gas dynamics problem of the interaction of a shock wave with a counter-propagating simple rarefaction wave often referred to as the shock wave refraction.
A.M. Leszczyszyn   +59 more
core   +5 more sources

Asymptotic behavior of solutions to a class of fourth-order nonlinear evolution equations with dispersive and dissipative terms

open access: yesJournal of Inequalities and Applications, 2016
We study the long time asymptotic behavior of solutions to a class of fourth-order nonlinear evolution equations with dispersive and dissipative terms. By using the integral estimation method combined with the Gronwall inequality, we point out that the ...
Tengyu Ma, Juan Gu, Longsuo Li
doaj   +1 more source

Dispersive coherent Brillouin scattering spectroscopy

open access: yesPhotoacoustics, 2023
Frequency- and time-domain Brillouin scattering spectroscopy are powerful tools to read out the mechanical properties of complex systems in material and life sciences.
Ayumu Ishijima   +3 more
doaj   +1 more source

Superradiant scattering of dispersive fields [PDF]

open access: yes, 2012
Motivated by analogue models of classical and quantum field theory in curved spacetimes and their recent experimental realizations, we consider wave scattering processes of dispersive fields exhibiting two extra degrees of freedom.
Liberati, Stefano   +3 more
core   +1 more source

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