Articles with "variable phase" as a keyword



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Weak (1,1) Boundedness of Oscillatory Singular Integral with Variable Phase

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Published in 2019 at "Acta Mathematica Sinica, English Series"

DOI: 10.1007/s10114-019-8270-3

Abstract: In this paper, the weak (1,1) boundedness of oscillatory singular integral with variable phase P(x)γ(y) for any x, y ∈ ℝ, $$Tf(x)\;:=\;{\rm{p}}.\>{\rm{v}}.\>\int_{- \infty}^\infty {{{\rm{e}}^{{\rm{i}}P(x)\gamma (y)}}f(x\;-\;y)\frac{dy}{y}}$$ is studied, where P is a real monic polynomial on… read more here.

Keywords: variable phase; integral variable; weak boundedness; singular integral ... See more keywords

Enabling Variable Phase-Pole Drives With the Harmonic Plane Decomposition

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Published in 2024 at "IEEE Access"

DOI: 10.1109/access.2024.3375752

Abstract: Magnet-free acrlongpl vppm are competitive alternatives in electric vehicles where torque-speed operating region, reliability, cost, and energy efficiency are key metrics. However, their modeling and control have so far relied on existing fixed-phase and pole-symmetrical… read more here.

Keywords: enabling variable; variable phase; pole drives; phase pole ... See more keywords

Spatially Variable Phase Filtering Algorithm Based on Azimuth Wavenumber Regularization for Bistatic Spotlight SAR Imaging Under Complicated Motion

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Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2021.3139965

Abstract: The 2-D space variance of echo signals is the key problem of image processing for bistatic synthetic aperture radar (BiSAR) under nonlinear platform trajectories. Although there are some existing studies that present solutions to deal… read more here.

Keywords: spatially variable; variable phase; phase; wavenumber ... See more keywords

Struvite and (K)‐struvite cements with variable phase composition‐controlled degradation profiles

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Published in 2025 at "Journal of the American Ceramic Society"

DOI: 10.1111/jace.70080

Abstract: Regenerative approaches to treat bone injuries often rely on calcium or magnesium phosphate‐based cement materials. Magnesium phosphate cements in particular are known for their favorable resorption behavior. However, the degradation process of the implanted materials… read more here.

Keywords: variable phase; cements variable; degradation; struvite struvite ... See more keywords
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Condition of phase angle for a new VDGA-based multiphase variable phase shift oscillator from 0o to 90o

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Published in 2020 at "International Journal of Electrical and Computer Engineering"

DOI: 10.11591/ijece.v10i4.pp3801-3810

Abstract: A novel interesting type of variable phase angle voltage mode oscillator using modern building block has been presented in this paper. The new proposed oscillator configuration which uses four voltage differencing gain amplifier (VDGA) and… read more here.

Keywords: variable phase; phase; condition phase; phase angle ... See more keywords