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On a continuous spectral algorithm for simulating non-stationary Gaussian random fields
(Springer New York LLC, 2018)
This paper presents an algorithm for simulating Gaussian random fields with zero mean and non-stationary covariance functions. The simulated field is obtained as a weighted sum of cosine waves with random frequencies and ...
Mean dimension and an embedding theorem for real flows
(Institute of Mathematics of the Polish Academy of Sciences (IMPAN), 2020)
We develop mean dimension theory for R-flows. We obtain fundamental properties and examples and prove an embedding theorem: Any real flow (X, R) of mean dimension strictly less than r admits an extension (Y, R) whose mean ...
Topological and flat-band states induced by hybridized linear interactions in one-dimensional photonic lattices
(American Physical Society (APS), 2020)
We report on a study of a one-dimensional linear photonic lattice hosting, simultaneously, fundamental and dipolar modes at every site. We show how, thanks to the coupling between different orbital modes, this minimal model ...
A Dual Ridge Broadband Orthomode Transducer for the 7-mm Band
(SPRINGER, 2012-12)
In this work we present a Q-band waveguide orthomode transducer (OMT) based
on a dual ridge structure. It was designed to be used in astronomical projects were an
excellent broad-band performance is mandatory. Of particular ...
A simple method to construct Flat Band lattices
(American Physical Society, 2016)
We develop a simple and general method to construct arbitrary flat-band lattices. We identify the basic ingredients behind zero-dispersion bands and develop a method to construct extended lattices based on a consecutive ...
Quantum localized states in photonic flat-band lattices
(American Physical Society, 2017)
The localization of light in flat-band lattices has been recently proposed and experimentally demonstrated in several configurations, assuming a classical description of light. Here we study the problem of light localization ...
Omnidirectional photonic band gaps in one-dimensional gradient refractive index photonic crystals considering linear and quadratic profiles
(Elsevier, 2021-12)
By using the transfer matrix formalism, in this work it is presented the study of the optical properties of 1D photonic structures constructed with M periods of bilayers of dielectric material and slabs with gradient ...
Shapley Supercluster Survey: construction of the photometric catalogues and i-band data release
(Oxford University Press, 2015)
The Shapley Supercluster Survey is a multi-wavelength survey covering an area of similar to 23 deg(2) (similar to 260 Mpc(2) at z = 0.048) around the supercluster core, including nine Abell and two poor clusters, having ...
The rock processing sector: part i: cutting technology tools, a new diamond segment band saw part ii: study of cutting forces
(Universidad Nacional de Colombia Sede Medellín, 2010)
This article presents the state of the art in cutting procedures used for ornamental stone processing: primarily diamond segment discs, diamond wires and frame saws. In all these, a reduction in cutting thickness has a ...
Wideband PIFA antenna for higher LTE band applications
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2015-01-01)
This paper introduces a broadband planar inverted-F antenna (PIFA) with U–Shaped capacitive feed technique for higher LTE band applications. The proposed antenna is based on a simple PIFA, where the capacitive feed plate, ...