Results 101 to 110 of about 113,812 (347)

Using wavelets for time series forecasting: Does it pay off? [PDF]

open access: yes
By means of wavelet transform a time series can be decomposed into a time dependent sum of frequency components. As a result we are able to capture seasonalities with time-varying period and intensity, which nourishes the belief that incorporating the ...
Schlüter, Stephan, Deuschle, Carola
core  

Multitaper adaptive time–frequency windowed synchroextracting transform based on the reliable region of window width

open access: yesEURASIP Journal on Advances in Signal Processing
Due to the limitation from the uncertainty principle, the window size consistently affects the resolution of time–frequency distributions. Determining the optimal window size is crucial for time–frequency analysis. In this work, we propose the concept of
Jen-Chieh Cheng, Jian-Jiun Ding
doaj   +1 more source

Comprehensive Assessment of Arterial, Tissue, and Venous Collaterals for Evaluating the Infarct Growth Rate: The Multimodal Collateral Score

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Collaterals are crucial factors that influence the infarct growth rate (IGR). We aimed to determine whether a comprehensive multimodal collateral score (MCS), incorporating collateral assessment at the arterial, tissue, and venous levels, is associated with functional independence and provides incremental prognostic value over ...
Giorgio Busto   +12 more
wiley   +1 more source

An Online Calibration System for Digital Input Electricity Meters Based on Improved Nuttall Window

open access: yesIEEE Access, 2018
This paper proposes an improved online calibration technique for digital input electricity meters. The technique employs a double-spectral-line interpolation fast Fourier transform algorithm with four-item, three-order Nuttall window to reduce the ...
Zhenhua Li   +6 more
doaj   +1 more source

Comparative Effectiveness and Safety of Inebilizumab Versus Rituximab in AQP4‐IgG‐Positive NMOSD

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Rituximab (anti‐CD20, RTX) and inebilizumab (anti‐CD19, INE) represent B‐cell‐depleting therapies used for aquaporin‐4 antibody‐positive (AQP4‐IgG+) neuromyelitis optica spectrum disorder (NMOSD); however, direct comparative evidence remains limited.
Jie Lin   +11 more
wiley   +1 more source

On the discrete version of Gabor's signal expansion, the Gabor transform, and the Zak transform [PDF]

open access: yes, 1996
Gabors expansion of a discrete-time signal into a set of shifted and modulated versions of an elementary signal or synthesis window is introduced, along with the inverse operation, i.e., the Gabor transform, which uses an analysis window that is related ...
Bastiaans, M.J.   +2 more
core   +2 more sources

MOGAD Is the Most Common Cause of Isolated Optic Neuritis in Children

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives The study aimed to characterize the clinical features, etiologies, and outcomes of isolated, first‐time pediatric ON in the post‐MOG‐IgG era. Methods This was a single‐center retrospective cohort study at Texas Children's Hospital of patients diagnosed with first‐time ON between 2018–2024, with follow‐up data collected through 2025.
Chaitanya Aduru   +13 more
wiley   +1 more source

Variable Moving Average Transform Stitching Waves [PDF]

open access: yes, 2016
A moving average transform in the plane with a variable size and shape window depending on the position and the ’time’ is studied. The main objective is to select the window parameters in such a way that the new transform converges smoothly to the ...
Vatchev, Vesselin, V. Vatchev
core   +2 more sources

Harmonic Analysis of Power System Based on Kaiser Window Four-spectrum-line Interpolation FFT

open access: yesJournal of Harbin University of Science and Technology, 2018
When the Fast Fourier Transform ( FFT) method is used to analyze the harmonics in a power network,the fast Fourier transform ( FFT) can produce spectral leakage and fence effect under the situation of nonsynchronized sampling and non-integral period ...
XUE Ping   +4 more
doaj   +1 more source

Windowed Radon transform frames

open access: yesApplied and Computational Harmonic Analysis, 2009
This paper is devoted to introduce two kind of windowed Radon transform frames to be used in the decomposition of band limited functions on certain classical spaces on \(l\)-dimensional real space, when \(l=3\). A set of interesting results is included in the content of the paper.
Shlivinski, Amir, Heyman, Ehud
openaire   +1 more source

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