Results 61 to 70 of about 1,127,435 (287)
A Fourier transform differentiator operator
Results in PhysicsBy utilizing the Fourier transform, we present a practical method for evaluating a function of a derivative applied to any other arbitrary function of a single complex variable.
Blanca L. Moreno-Ley +3 more
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Replica Fourier Transform: Properties and applications
Nuclear Physics B, 2015 The Replica Fourier Transform is the generalization of the discrete Fourier Transform to quantities defined on an ultrametric tree. It finds use in conjunction of the replica method used to study thermodynamics properties of disordered systems such as ...
A. Crisanti, C. De Dominicis
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Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies
Advanced Engineering Materials, EarlyView.Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo +3 more
wiley +1 more source
Directional short-time Fourier transform of distributions
Journal of Inequalities and Applications, 2016 In this paper we consider the directional short-time Fourier transform (DSTFT) that was introduced and investigated in (Giv in J. Math. Anal. Appl. 399:100-107, 2013). We analyze the DSTFT and its transpose on test function spaces S ( R n ) $\mathcal {S}(
Katerina Hadzi-Velkova Saneva +1 more
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Macromolecular Materials and Engineering, 2002 Viscosity and the related dissipation of energy play an important role in many macroscopic and microscopic processes. As the amplitude of mechanical perturbations increases, non-linear effects become important and induces shear thinning or thickening (Malkin 1995).
openaire +2 more sources
Ambiguities in one-dimensional phase retrieval from magnitudes of a linear canonical transform
, 2016 Phase retrieval problems occur in a wide range of applications in physics and engineering. Usually, these problems consist in the recovery of an unknown signal from the magnitudes of its Fourier transform.
Beinert, Robert
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Advanced Engineering Materials, EarlyView.The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann +6 more
wiley +1 more source
A General Geometric Fourier Transform
, 2013 The increasing demand for Fourier transforms on geometric algebras has resulted in a large variety. Here we introduce one single straight forward definition of a general geometric Fourier transform covering most versions in the literature.
B Jancewicz +10 more
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Advanced Engineering Materials, EarlyView.Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller +8 more
wiley +1 more source
An ultra-precise Fast Fourier Transform
Measurement: SensorsThe Fast Fourier Transform (FFT) is a cornerstone of digital signal processing, generating a computationally efficient estimate of the frequency content of a time series.
Manus Henry
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