Results 71 to 80 of about 21,702 (292)
Advances in causal discovery methods for ecological time series
Biological Reviews, EarlyView.ABSTRACT Recent advances in data collection technologies (e.g. automated sensor networks, satellite remote sensing, and high‐throughput sequencing) have greatly expanded the availability of ecological time series, enabling new opportunities for causal analyses in dynamic ecosystems.
Kenta Suzuki +6 more
wiley +1 more source
Journal of Approximation Theory, 2015 For \(f\in L^{p}(\mathbb{R})\), \(1\leq p\leq \infty\), its Hilbert transform is defined by \(\tilde{f}(x)=\frac{1}{\pi}(p.v.)\int_{-\infty}^{\infty}\frac{f(t)}{x-t}dt\). For \(E\) a union of disjoint compact intervals, i.e. \(\displaystyle E=[a_{1}, a_{2}]\cup [a_{3}, a_{4}]\cup \dots [a_{2 k-1}, a_{2 k}]\), where \(a_{1}1\) then the inversion formula
openaire +1 more source
Hilbert transform associated with the fractional Fourier transform [PDF]
, 1998 The analytic part of a signal f (t) is obtained by suppressing the negative frequency content of f, or in other words, by suppressing the negative portion of the Fourier transform, (f) over cap of f.
core +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT In response to growing global challenges, this study explores how social entrepreneurship within the Edible City movement contributes to building resilient, sustainable, and equitable urban food systems. Drawing on semistructured interviews with over 70 stakeholders across five cities—Berlin, Andernach, Oslo, Rotterdam, and Havana—we ...
Ina Säumel +6 more
wiley +1 more source
Boundedness of the Hilbert Transform on Rearrangement Invariant Spaces
Revista IntegraciónIn this self-contained review, the aspects about the applications of decreasing rearrangement techniques to the analysis of pointwise estimates for the Hilbert transform are analyzed. We make a consistent revision of these techniques in the proof of the
Héctor Camilo Chaparro +1 more
doaj +1 more source
Network traffic anomaly detection using EMD and Hilbert-Huan transform [PDF]
, 2013 Empirical Mode Decomposition (EMD) and Hilbert-Huang Transform (HHT) provide a means for adaptive data analysis. EMD extracts Intrinsic Mode Functions (IMFs) that represent the frequency and amplitude characteristics of a signal.
NC DOCKS at Western Carolina University +1 more
core
Business Strategy and the Environment, EarlyView.ABSTRACT Waste management remains a critical grand challenge in African countries. While entrepreneurship has been a viable strategy for addressing this challenge, it is fraught with constraints. This study investigates the strategies orchestrated by entrepreneurs to navigate adversity in Waste management and ensure the social and economic viability of
Tahiru Azaaviele Liedong +3 more
wiley +1 more source
DYADIC TRIANGULAR HILBERT TRANSFORM OF TWO GENERAL FUNCTIONS AND ONE NOT TOO GENERAL FUNCTION
Forum of Mathematics, Sigma, 2015 The so-called triangular Hilbert transform is an elegant trilinear singular integral form which specializes to many well-studied objects of harmonic analysis.
VJEKOSLAV KOVAČ +2 more
doaj +1 more source
Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati +2 more
wiley +1 more source
Hilbert transform of voltammetric data [PDF]
, 2004 The use of the fast Fourier transform (FFT) assumes stationarity and, in many applications, linearity; assumptions that are often invalid in the analysis of voltammetric data.
Parker, K.H. +4 more
core +3 more sources