Articles with "virtual source" as a keyword



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Development of a virtual source model for Monte Carlo-based independent dose calculation for varian linac.

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Published in 2022 at "Journal of applied clinical medical physics"

DOI: 10.1002/acm2.13556

Abstract: Monte Carlo (MC) independent dose calculations are often based on phase-space files (PSF), as they can accurately represent particle characteristics. PSF generally are large and create a bottleneck in computation time. In addition, the number… read more here.

Keywords: monte carlo; virtual source; calculation; independent dose ... See more keywords
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A virtual-source emission-diffusion I-V model for ultra-thin black phosphorus field-effect transistors

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Published in 2019 at "Journal of Applied Physics"

DOI: 10.1063/1.5064474

Abstract: In this paper, we develop an analytic model based on the theory of virtual-source emission-diffusion (VS-ED) to describe ambipolar current conduction in ultrathin black phosphorus (BP) field-effect transistors (FETs). Unlike the VS model which is… read more here.

Keywords: virtual source; source; emission diffusion; effect ... See more keywords
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Joint FWI of Active Source Data and Passive Virtual Source Data Reconstructed Using an Improved Multidimensional Deconvolution

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Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2023.3257390

Abstract: Traditional full waveform inversion (FWI) highly depends on sufficient low-frequency data or a good initial model. Passive seismic data contain rich low-frequency components, and passive seismic FWI using virtual source data by seismic interferometry (SI)… read more here.

Keywords: virtual source; low frequency; source data; source ... See more keywords
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Intravascular Ultrasound Imaging With Virtual Source Synthetic Aperture Focusing and Coherence Factor Weighting

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Published in 2017 at "IEEE Transactions on Medical Imaging"

DOI: 10.1109/tmi.2017.2723479

Abstract: Intravascular ultrasound (IVUS) has been frequently used for coronary artery imaging clinically. More importantly, IVUS is the fundamental image modality for most advanced multimodality intravascular imaging techniques, since it provides a more comprehensive picture of… read more here.

Keywords: virtual source; coherence factor; synthetic aperture;
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Prestack diffraction separation in the common virtual source gather

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Published in 2020 at "Geophysics"

DOI: 10.1190/geo2020-0105.1

Abstract: Diffractions are the seismic responses of subsurface small-scale geologic discontinuities or inhomogeneities, whose energy is much weaker than that of reflections. To eliminate the masking effect of strong reflections on weak diffractions, a prestack diffraction… read more here.

Keywords: cvsg; virtual source; diffraction; gather ... See more keywords
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Determination of virtual source position using back projecting zero and convergent arcTAN method for scanning-passive scatter beam in carbon ion therapy.

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Published in 2022 at "Journal of X-ray science and technology"

DOI: 10.3233/xst-221274

Abstract: OBJECTIVE This study aims to develop and test a new technique by using the convergent arcTAN (cATAN) method capable of dealing with the virtual source position delivered by different carbon ion energies from the pattern… read more here.

Keywords: virtual source; carbon ion; source position; source ... See more keywords