Browsing by Title
Now showing items 22109-22128 of 24443
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Article
Water-gas shift reaction on Pt/Ce1- xTixO 2-δ: The effect of Ce/Ti ratio
(2013)Pt nanoparticles (1.2-2.0 nm size) supported on Ce1-xTi xO2-δ (x = 0, 0.2, 0.5, 0.8, and 1.0) carriers synthesized by the citrate sol-gel method were tested toward the water-gas shift (WGS) reaction in the 200-350 C range. ...
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Article
Water-soluble ABC triblock copolymers based on vinyl ethers: Synthesis by living cationic polymerization and solution characterization
(1997)Water-soluble ABC triblock copolymers of methyl vinyl ether (MVE), ethyl vinyl ether (EVE), and methyl tri(ethylene glycol) vinyl ether (MTEGVE) of various block sequences and carrying 20 monomer units in each block were ...
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Water-stable 2-D Zr MOFs with exceptional UO22+ sorption capability
(Royal Society of Chemistry, 2019-12-02)Two new 8-connected 2-D MOFs, UCY-13 and UCY-14, based on Zr6 secondary building units (SBUs) and angular dicarboxylate ligands are reported. UCY-13 and UCY-14 display remarkable stability in various types of aqueous media, ...
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Article
Waterloss Detection in Water Distribution Networks using Wavelet Change-Point Detection
(2017)The work presented herein addresses the automatic detection of water losses in water distribution networks (WDN), through the dynamic analysis of the time series related to water consumption within the network and the use ...
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Conference Object
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Article
Watt matters most? Design space exploration of high-performance microprocessors for power-performance efficiency
(2007)Computer systems have evolved significantly in the last years leading to high-performance systems. This, however, has come with a cost of large power dissipation. As such, power-awareness has become a major factor in ...
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Article
Wave energy potential in the Eastern Mediterranean Levantine Basin. An integrated 10-year study
(2014)The main characteristics of wave energy potential over Eastern Mediterranean Levantine Basin, an area of increased interest for energy resources exploration/exploitation, is presented in this work. In particular, an ...
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Article
Wavefunction of the universe: Diffeomeorphism invariance and field redefinitions
(Proceedings of Science (SISSA), 2022-11-23)We review some recent results concerning the Hartle-Hawking wavefunction of the universe. We focus on pure Einstein theory of gravity in the presence of a positive cosmological constant. We carefully implement the gauge-fixing ...
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Wavefunction of the universe: Reparametrization invariance and field redefinitions of the minisuperspace path integral
(Elsevier, 2021-11-03)We consider the Hartle–Hawking wavefunction of the universe defined as a Euclidean path integral that satisfies the “no-boundary proposal.” We focus on the simplest minisuperspace model that comprises a single scale factor ...
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Conference Object
Wavelength-selective cross-connect architecture interconnecting multiwavelength self-healing rings
(1997)
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Wavelet analysis and its statistical applications
(2000)In recent years there has been a considerable development in the use of wavelet methods in statistics. As a result, we are now at the stage where it is reasonable to consider such methods to be another standard tool of the ...
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Conference Object
Wavelet analysis of motor unit action potentials
(IEEE, 1996)In this study the usefulness of the wavelet transforms (WT) Daubechies with 4 and 20 coefficients, Chui, and Battle-Lemarie in analyzing MUAPs recorded from normal subjects and subjects suffering with motor neuron disease ...
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Article
Wavelet coefficients measuring smoothness in H p(ℝd)
(1996)We investigate the connection between Besov spaces and certain approximation subspaces of the Hardy spaces Hp(ℝd), 0 < p ≤ 1. In particular, we establish the wavelet decompositions for the Hp(ℝd) spaces and we characterize ...
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Wavelet compression and nonlinear n-widths
(1993)It is shown that certain algorithms of compression based on wavelet decompositions are optimal in the sense of nonlinear n-widths. © 1993 J.C. Baltzer AG, Science Publishers.
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Conference Object
Wavelet decomposition and unresolvable component analysis of optical coherence tomography signals
(2005)
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Conference Object
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Wavelet density estimation for weighted data
(2014)We consider the estimation of a density function on the basis of a random sample from a weighted distribution. We propose linear and nonlinear wavelet density estimators, and provide their asymptotic formulae for mean ...
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Wavelet estimators in nonparametric regression: A comparative simulation study
(2001)Wavelet analysis has been found to be a powerful tool for the nonparametric estimation of spatially-variable objects. We discuss in detail wavelet methods in nonparametric regression, where the data are modelled as ...
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Wavelet instruments for efficiency gains in generalized method of moment models
(2007)We propose a simple computational method in the context of generalized method of moments for improving the efficiency of regression coefficient estimates. The gains in efficiency arise by incorporating additional moment ...