Articles with "propagation based" as a keyword



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A model of COVID-19 propagation based on a gamma subordinated negative binomial branching process

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Published in 2020 at "Journal of Theoretical Biology"

DOI: 10.1016/j.jtbi.2020.110536

Abstract: We build a parsimonious Crump-Mode-Jagers continuous time branching process of COVID-19 propagation based on a negative binomial process subordinated by a gamma subordinator. By focusing on the stochastic nature of the process in small populations,… read more here.

Keywords: propagation; covid propagation; propagation based; process ... See more keywords
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In vivo monitoring of bone microstructure by propagation-based phase-contrast computed tomography using monochromatic synchrotron light

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Published in 2019 at "Laboratory Investigation"

DOI: 10.1038/s41374-019-0337-3

Abstract: Hard X-ray phase-contrast imaging is sensitive to density variation in objects and shows a dose advantage for in vivo observation over absorption-contrast imaging. We examined the capability of propagation-based phase-contrast tomography (PB-PCT) with single-distance phase… read more here.

Keywords: phase; pct; propagation based; bone ... See more keywords
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Propagation-based phase-contrast synchrotron imaging of aortic dissection in mice: from individual elastic lamella to 3D analysis

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Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-20673-x

Abstract: In order to show the advantage and potential of propagation-based phase-contrast synchrotron imaging in vascular pathology research, we analyzed aortic medial ruptures in BAPN/AngII-infused mice, a mouse model for aortic dissection. Ascending and thoraco-abdominal samples… read more here.

Keywords: contrast; analysis; propagation based; contrast synchrotron ... See more keywords
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A Fast and Efficient Algorithm for Mining Top-k Nodes in Complex Networks

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/srep43330

Abstract: One of the key problems in social network analysis is influence maximization, which has great significance both in theory and practical applications. Given a complex network and a positive integer k, and asks the k… read more here.

Keywords: algorithm; based algorithms; propagation based; topology ... See more keywords
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WOAPR: an affinity propagation based clustering and optimal path selection for time-critical wireless sensor networks

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Published in 2019 at "IET Networks"

DOI: 10.1049/iet-net.2018.5081

Abstract: Wireless sensor networks (WSNs) spread their returns to every field having the requirement of continuous monitoring. Clustering is an important mechanism in WSN for minimum energy consumption and better network performance. In these networks, optimal… read more here.

Keywords: wireless sensor; affinity propagation; propagation based; time critical ... See more keywords
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Dark-field signal extraction in propagation-based phase-contrast imaging.

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Published in 2020 at "Physics in medicine and biology"

DOI: 10.1088/1361-6560/abac9d

Abstract: A method for extracting the dark-field signal in propagation-based phase-contrast imaging is proposed. In the case of objects consisting predominantly of a single material, or several different materials with similar ratios of the real decrement… read more here.

Keywords: dark field; based phase; propagation based; field signal ... See more keywords
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Characterization of a Laboratory-Based X-Ray Computed Nanotomography System for Propagation-Based Method of Phase Contrast Imaging

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Published in 2020 at "IEEE Transactions on Instrumentation and Measurement"

DOI: 10.1109/tim.2019.2910338

Abstract: Phase contrast imaging (PCI) is used to extend X-ray computed nanotomography (nCT) technique for analyzing samples with a low X-ray contrast, such as polymeric structures or soft tissues. Although this technique is used in many… read more here.

Keywords: phase contrast; ray; propagation based;
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Hybrid Fingerprinting and Ray Extension Localization in NLOS Regions

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Published in 2022 at "IEEE Transactions on Intelligent Transportation Systems"

DOI: 10.1109/tits.2022.3192180

Abstract: A general non-asymptotic theoretical analysis is developed for fingerprinting localization system designs. Based on this analysis, hybrid fingerprinting and propagation-based methods are proposed using 5G-like received signal strength (RSS), time of arrival (TOA), and direction… read more here.

Keywords: localization; fingerprinting methods; extension; hybrid fingerprinting ... See more keywords
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Image Matting With Deep Gaussian Process.

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Published in 2022 at "IEEE transactions on neural networks and learning systems"

DOI: 10.1109/tnnls.2022.3153955

Abstract: We observe a common characteristic between the classical propagation-based image matting and the Gaussian process (GP)-based regression. The former produces closer alpha matte values for pixels associated with a higher affinity, while the outputs regressed… read more here.

Keywords: propagation based; image matting; image; gaussian process ... See more keywords
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Distortion propagation-based optimal λ decision for random access rate control in HEVC

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Published in 2020 at "Journal of Electronic Imaging"

DOI: 10.1117/1.jei.29.1.013002

Abstract: Abstract. Rate control plays a key role in high-efficiency video coding. For the λ domain rate control, the λ is calculated according to the allocated bits per pixel and by adaptively updating parameters. However, the… read more here.

Keywords: distortion propagation; rate; propagation based; rate control ... See more keywords
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Spectral propagation-based x-ray phase-contrast computed tomography.

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Published in 2022 at "Journal of medical imaging"

DOI: 10.1117/1.jmi.9.3.031506

Abstract: Purpose: Propagation-based x-ray imaging (PBI) is a phase-contrast technique that is employed in high-resolution imaging by introducing some distance between sample and detector. PBI causes characteristic intensity fringes that have to be processed with appropriate… read more here.

Keywords: phase retrieval; propagation based; phase; phase contrast ... See more keywords