Results 11 to 20 of about 1,224,406 (321)
Semi‐supervised classification of fundus images combined with CNN and GCN
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose Diabetic retinopathy (DR) is one of the most serious complications of diabetes, which is a kind of fundus lesion with specific changes. Early diagnosis of DR can effectively reduce the visual damage caused by DR. Due to the variety and different morphology of DR lesions, automatic classification of fundus images in mass screening can ...
Sixu Duan +8 more
wiley +1 more source
Open Astronomy, 2022 As shown in the first results of MHD simulations in the real scale of time, above the active region (AR) 10365, during the first flare M 1.9 (05/26/2003 05:34) at a height of 16–18 mm (lower corona), a singular line of magnetic field appears.
Borisenko Alexey Vasilevich +2 more
doaj +1 more source
The Sun’s Supergranulation [PDF]
Living Reviews in Solar Physics, 2010 Supergranulation is a fluid-dynamical phenomenon taking place in the solar photosphere, primarily detected in the form of a vigorous cellular flow pattern with a typical horizontal scale of approximately 30--35~megameters, a dynamical evolution time of 24--48~h, a strong 300--400~m/s (rms) horizontal flow component and a much weaker 20--30~m/s vertical
Rincon, Francois, Rieutord, Michel
openaire +8 more sources
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose The aim of this work was to evaluate the SunCHECK PerFRACTION, the software for in vivo monitoring using EPID images. Materials/Methods First, the PerFRACTION ability to detect errors was investigated simulating two situations: (1) variation of LINAC output and (2) variation of the phantom thickness.
Samuel Ramalho Avelino +3 more
wiley +1 more source
MHD WAVES IN THE COLLISIONAL PLASMA OF THE SOLAR CORONA AND TERRESTRIAL IONOSPHERE
Solar-Terrestrial Physics, 2020 We have studied MHD waves (Alfvén and fast compressional modes) in a homogeneous collisional three-component low-β plasma. The three-component plasma consists of electrons, ions, and neutrals with arbitrary ratio between collision frequencies and wave ...
A.K. Nekrasov, V.A. Pilipenko
doaj +1 more source
Journal of Space Weather and Space Climate, 2021 The European Union funded the FLARECAST project, that ran from January 2015 until February 2018. FLARECAST had a research-to-operations (R2O) focus, and accordingly introduced several innovations into the discipline of solar flare forecasting.
Georgoulis Manolis K. +27 more
doaj +1 more source
Examination of Symbolic Imagery of Concept of the Perfect Man in Molana's Masnavi and Sohrevardi's Stories [PDF]
Matn/Pizhūhī-i Adabī, 2022 The most dominant theme of the richest works on mysticism is perceptive imagery which has its origin in mythology and philosophy. Given their intrinsic link to the meanings and concepts, images are considered as the intellectual life of the writer and ...
Maryam Haghshenas, Davoud Sparham
doaj +1 more source
Nature Physics, 2019 Tell Bartolo Luque and Fernando Ballesteros how far the Sun is from the Earth, and they will tell you the size of the Universe.
Bartolo Luque, Fernando J. Ballesteros
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Manifestation of sun motif in Iranian carpet [PDF]
Jilvah-i hunar, 2016 Iranian carpet is always a place for manifestation of many different motifs. Each of these motifs has benefited from the emotion expression of designers or weavers.
mohammad reza shahparvari +1 more
doaj +1 more source
Detecting a New Type of Stokes V Profiles Observed by Hinode in a Sunspot [PDF]
Iranian Journal of Astronomy and Astrophysics, 2023 A part of a mature sunspot including of umbrae and penumbrae is observationally examined to find photospheric dynamics. We analyze spectro-polarimetric observations of photospheric Fe~I lines with the Solar Optical Telescope aboard Hinode to find ...
Hashem Hamedivafa
doaj +1 more source