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Dynamical sampling for shift-preserving operators
(Academic Press Inc Elsevier Science, 2021-03)
In this note, we solve the dynamical sampling problem for a class of shift-preserving operators L:V→V acting on a finitely generated shift-invariant space V. We find conditions on L and a finite set of functions of V so ...
Predicting 13Ca chemical shifts for validation of protein structures
(Springer, 2007-07)
The 13Ca chemical shifts for 16,299 residues from 213 conformations of four proteins (experimentally determined by X-ray crystallography and Nuclear Magnetic Resonance methods) were computed by using a combination of ...
Factors affecting the use of 13Cα chemical shifts to determine, refine, and validate protein structures
(Veterinary and Human Toxicology, 2008-05)
Interest centers here on the analysis of two different, but related, phenomena that affect side-chain conformations and consequently 13Cα chemical shifts and their applications to determine, refine, and validate protein ...
Reading Shakespearean tropes in a foreign tongue: Age of L2 acquisition modulates neural responses to functional shifts
(Pergamon-Elsevier Science Ltd, 2019-02)
Functional shifts (FSs) – morphosyntactically marked words evoking coherent but novel meanings – are ubiquitous in English and, specially, in Shakespearean literature. While their neural signatures have been explored in ...
Novel modified phase-shift modulation strategy for isolated AC-DC power converters
(Institution of Engineering and Technology, 2020-04)
Different power converter topologies are used to perform the energy exchange between an AC grid and a DC source belonging to a hybrid electric micro-grid. A single-phase single-stage isolated AC-DC power converter is one ...
Subspaces with extra invariance nearest to observed data
(Elsevier Inc, 2016-09)
Given an arbitrary finite set of data F = {f1, ..., fm} ⊂ L2(Rd) we prove the existence and show how to construct a “small shift invariant space” that is “closest” to the data F over certain class of closed subspaces of ...
Species- and community-level responses combine to drive phenology of lake phytoplankton
(Ecological Society of America, 2013-10)
Global change is leading to shifts in the seasonal timing of growth and maturation for primary producers. Remote sensing is increasingly used to measure the timing of primary production in both aquatic and terrestrial ...
Role of step sites on water dissociation on stoichiometric ceria surfaces
(Springer, 2012-03)
The adsorption and dissociation of water on CeO 2(111), CeO 2(221), CeO 2(331), and CeO 2(110) has been studied by means of periodic density functional theory using slab models. The presence of step sites moderately affects ...