Results 1 to 10 of about 36,471 (278)
Symplectic Radon Transform and the Metaplectic Representation [PDF]
Entropy, 2022 We study the symplectic Radon transform from the point of view of the metaplectic representation of the symplectic group and its action on the Lagrangian Grassmannian.
Maurice A. de Gosson
doaj +2 more sources
Swiss national radon database: impact of building and environmental factors [PDF]
Frontiers in Public HealthSince the 1980s, radon has been recognized as a public health concern in Switzerland and internationally. In an effort to more accurately estimate the number of lung cancer cases attributable to radon exposure, Swiss health authorities initiated the ...
Joan F. Rey +3 more
doaj +2 more sources
New Poisson inequality for the Radon transform of infinitely differentiable functions [PDF]
Journal of Inequalities and Applications, 2018 Poisson inequality for the Radon transform is a key tool in signal analysis and processing. An analogue of the Hardy–Littlewood–Poisson inequality for the Radon transform of infinitely differentiable functions is proved.
Ziyao Sun
doaj +2 more sources
On the V-Line Radon Transform and Its Imaging Applications [PDF]
International Journal of Biomedical Imaging, 2010 Radon transforms defined on smooth curves are well known and extensively studied in the literature. In this paper, we consider a Radon transform defined on a discontinuous curve formed by a pair of half-lines forming the vertical letter V.
M. Morvidone +3 more
doaj +2 more sources
Long-Term Impacts of Weather Conditions on Indoor Radon Concentration Measurements in Switzerland
Atmosphere, 2022 Radon is a natural and radioactive gas that can accumulate in indoor environments. Indoor radon concentration (IRC) is influenced, among other factors, by meteorology, which is the subject of this paper.
Joan Frédéric Rey +5 more
doaj +1 more source
Weather Impacts on Indoor Radon Short-Term Measurements in Switzerland
Atmosphere, 2023 Radon is a natural and radioactively well-known carcinogenic indoor air pollutant. Since 2020, a radon short-term proactive methodology has been proposed by Swiss authorities, which aims to evaluate the probability of overpassing the national reference ...
Joan F. Rey +2 more
doaj +1 more source
Dispersive Radon transform [PDF]
The Journal of the Acoustical Society of America, 2018 Dispersion results in the spreading and overlapping of the wave-packets, which often limits the capability of signal interpretation; on the other hand, such a phenomenon can also be used for structure or media evaluation. In this study, the authors propose an original dispersive Radon transform (DRT), which is formulated as integration transform along ...
Xu, Kailiang +2 more
openaire +3 more sources
Radon Transform Based on Waveform for AVO-Preserving Data Construction
Applied Sciences, 2021 The traditional hyperbolic Radon transform suffers from the major problem of how to both obtain a high resolution and preserve the amplitude variation with offset (AVO). In the Radon domain, high resolution (sparseness) is a valid criterion.
Shengchao Wang +3 more
doaj +1 more source
Inverse Multiscale Discrete Radon Transform by Filtered Backprojection
Applied Sciences, 2020 The Radon transform is a valuable tool in inverse problems such as the ones present in electromagnetic imaging. Up to now the inversion of the multiscale discrete Radon transform has been only possible by iterative numerical methods while the continuous ...
José G. Marichal-Hernández +4 more
doaj +1 more source
Line Detection Using Radon Transform [PDF]
Engineering and Technology Journal, 2010 To extract features from digital images, it is useful to be able to find simpleshapes (straight lines, circles, ellipses, etc.).In order to achieve this goal, one can be able to detect a group of pixels that are ona straight line or a smooth curve.
H. H. Abbas, Hussein Ali Hussein
doaj +1 more source