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Approximate up-scaling of geo-spatial variables applied to deep foundation design
(Brasil, 2011)
We present a series of simple approximate methods for up-scaling the cumulative distribution function of spatially correlated variables by using an effective number n e of independent variables. Methods are based on the ...
Exact partial wave expansion of optical beams with respect to an arbitrary origin
(Optical Soc AmerWashingtonEUA, 2006)
Landscape tomography through primordial non-Gaussianity
(American Physical Society, 2018)
In this paper, we show how the structure of the landscape potential of the primordial Universe
may be probed through the properties of the primordial density perturbations responsible for the
origin of the cosmic microwave ...
Simulation of non-stationary non-Gaussian random fields from sparse measurements using Bayesian compressive sampling and Karhunen-Loève expansion
(Elsevier BVUniversidad EAFIT. Departamento de Ingeniería Mecánica, 2019-03-20)
The first step to simulate random fields in practice is usually to obtain or estimate random field parameters, such as mean, standard deviation, correlation function, among others. However, it is difficult to estimate these ...
Wave propagation in non-Gaussian random media
(IOP Publishing, 2015-01)
We develop a compact perturbative series for acoustic wave propagation in a medium with a non-Gaussian stochastic speed of sound. We use Martin-Siggia and Rose auxiliary field techniques to render the classical wave ...
Untangling features in the primordial spectra
(IOP, 2015)
We discuss the possible existence of features in both the primordial power
spectrum and bispectrum generated during a stage of single eld cosmic in
ation. We argue
that there are two main classes of features: those ...
The breaking of transience inertio-gravity waves in a shear flow using the Gaussian beam approximation.
(Cambridge University Press, 2014-11)
The propagation of transient inertio-gravity waves in a shear flow is examined using the Gaussian beam formulation. This formulation assumes Gaussian wavepackets in the spectral space and uses a second-order Taylor expansion ...
From pattern to process: estimating expansion rates of a forest tree species in a protected palm savanna
(Springer, 2014-04)
We assessed the possible influences of dominant tree density (Butia yatay palm trees) and fire on the expansion of a riparian tree population (Myrcianthes cisplatensis) over El Palmar National Park, a protected savanna in ...
Gaussian distribution of trie depth for strongly tame sources
(Cambridge University Press, 2015-01)
The depth of a trie has been deeply studied when the source which produces the words is a simple source (a memoryless source or a Markov chain). When a source is simple but not an unbiased memoryless source, the expectation ...