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Oblique Dual Fusion Frames
(Taylor & Francis, 2018-05)
We introduce and develop the concept of oblique duality for fusion frames. This concept provides a mathematical framework to deal with problems in distributed signal processing where the signals considered as elements in ...
Wide Sense Stationary Processes Forming Frames
(Institute of Electrical and Electronics Engineers, 2011-07)
In this paper, we study the question of the representation of random variables by means of frames or Riesz basis generated by stationary sequences. This concerns the representation of continuous time wide sense stationary ...
Frames e multilingualidade: equivalentes de tradução no dicionário bilíngue do futebol da Copa de 2014
(Universidade do Vale do Rio dos Sinos, 2013-09-13)
This research aims at reflecting about the translation equivalents on the soccer domain regarding to a multilingual project based on the fundamentals of Frame Semantics (Fillmore, 1982; 1985). This proposition underlies ...
Frames e multilingualidade: equivalentes de tradução no dicionário bilíngue do futebol da Copa de 2014
(Universidade do Vale do Rio dos Sinos, 2013-09-13)
This research aims at reflecting about the translation equivalents on the soccer domain regarding to a multilingual project based on the fundamentals of Frame Semantics (Fillmore, 1982; 1985). This proposition underlies ...
Another violent protest?: new perspectives to understand protest coverage
(2022)
This study assesses the relationship between two well-established sets of frames to better understand the news coverage of massive political protests. By relying on Semetko and Valkenburg’s generic frames and McLeod and ...
Tight frame completions with prescribed norms
(Sampling Publishing, 2008-01)
Let H be a finite dimensional (real or complex) Hilbert space and let {a_i} ∞_i=1. be a non-increasing sequence of positive numbers. Given a finite sequence of vectors F = {f_i}p_i=1 in H we find necessary and sufficient ...
Local-to-global frames and applications to the dynamical sampling problem
(Birkhauser Verlag Ag, 2021)
In this paper, we consider systems of vectors in a Hilbert space H of theform {gjk : j ∈ J, k ∈ K} ⊆ H, where J and K are countable sets of indices.We find conditions under which the local reconstruction properties of such ...
Wavelets on irregular grids with arbitrary dilation matrices and frame atoms for L2(ℝd)
(Academic Press Inc Elsevier Science, 2004-12)
In this article, we develop a general method for constructing wavelets {| det Aj|1/2ψ(Ajx-xj,k): j ∈ J, k ∈ K} on irregular lattices of the form X = {xj,k ∈ ℝd: j ∈ J, k ∈ K}, and with an arbitrary countable family of ...
On the Papoulis Sampling Theorem: Some General Conditions
(Institute of Electrical and Electronics Engineers, 2018-10)
Some general conditions for multichannel sampling are established for wide sense stationary sequences with spectral density. First, necessary and sufficient conditions are given for these processes so that they are linearly ...