Results 31 to 40 of about 3,035 (261)
Applied Sciences, 2018 Separation of downgoing and upgoing P-waves and S-waves in an offset 2D/3D vertical seismic profile (VSP) record is a basic step in VSP data processing. Radon transform and median filtering methods are commonly used to separate wavefields.
Yuyong Yang, Jun Lu, Yun Wang
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Some uniqueness theorems for a conical Radon transform
Journal of Physics Communications, 2023 The conical Radon transform, which assigns to a given function f on ${{\mathbb{R}}}^{3}$ its integrals over conical surfaces, arises in several imaging techniques, e.g. in astronomy and homeland security, especially when the so-called Compton cameras are
Sunghwan Moon
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The Radon transform on Abelian Groups
Journal of Combinatorial Theory, Series A, 1987 Let A be a finite group and let B be a subset of A. For any function \(f: A\to {\mathbb{C}}\), one can define the function \(F_ B: A\to {\mathbb{C}}\), called the Radon transform of f with respect to B by \(F_ B(a):=\sum_{b\in B}f(ab)\). The problem we address in this note is: for which subsets B is the Radon transform invertible ?
Peter Frankl, Ronald L. Graham
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Comparison problems for Radon transforms
Advances in Mathematics, 2023 26 ...
Koldobsky, Alexander +2 more
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Performance evaluation of radon measurement techniques in single-family homes
Indoor EnvironmentsRadon, a naturally occurring radioactive gas, poses a significant health risk as prolonged exposure indoors can lead to lung cancer. Current radon measurement techniques vary widely in methodology, device types, and exposure duration, posing challenges ...
Joan F. Rey +2 more
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Rotation Invariant Automatic Infrared Target Recognition using G-Radon
MATEC Web of Conferences, 2016 In recent research, automatic target recognition (ATR) of infrared targets has been taking a lot of interest to the researchers. A rotation invariant method is useful in target recognition, classification and image analysis to reduce the number of ...
Won Jin-Ju, Kim Sungho
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Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level
Aging and Cancer, EarlyView.This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
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Indoor EnvironmentsIndoor air pollution is a major threat to human health, contributing to both acute and chronic diseases in exposed individuals. School environments are particularly at risk, as they host vulnerable populations which spend a considerable amount of time ...
Joan F. Rey +6 more
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Discrete Applied Mathematics, 2001 The author studies properties of group codes, namely generalized weights and spectra of linear block codes over a finite field and their analogues for lattice sphere packings in Euclidean space. He obtains new results about linear codes, and generalizations of Siegel mean value and Minkowski-Hlawka theorems.
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Metabolic and Microvascular Risk Factors Associated With Brain Health in Type 1 Diabetes
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT We examined relationships between metabolic factors, microvascular complications, and brain health in adults with type 1 diabetes. Fifty‐one adults were assessed for metabolic risk factors, microvascular complications, and cognitive function, with a subset completing brain MRI.
Jihyun Park +7 more
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