Results 111 to 120 of about 1,248,900 (279)

Predicting Sunspot Numbers

, 2008
. We have analyzed the Wolf's sunspot series in order to construct an evolutionary optimized feedforward neural network model to predict the yearly sunspot number average.
Juha Hakkarainen, Jari Kyngäs
core  

Evaluation of spatial distribution of initial marking strategy among inexperienced graders in diabetic retinopathy: A retrospective cross‐sectional analysis

Acta Ophthalmologica, EarlyView.
Abstract Background Manual diabetic retinopathy (DR) grading may prefer certain regions and underestimate others. It is unclear if inexperienced graders' initial marking strategy reflects a specialist's marking pattern. Aims By the virtual ocular learning platform (VIOLA), we evaluated if initial DR‐lesion markings among inexperienced graders spatially
Simon Joel Ellerup Lowater, Andrea Blasi Núñez, Jakob Kristian Holm Andersen, Sebastian Dinesen, Thiusius Rajeeth Savarimuthu, Jakob Grauslund   +5 more
wiley   +1 more source

Concurrent macular neovascularization in shallow irregular retinal pigment epithelium elevation phenotypes in age‐related macular degeneration and chronic central serous chorioretinopathy: A systematic review and meta‐analysis

Acta Ophthalmologica, EarlyView.
Abstract This systematic review and meta‐analysis synthesized the reported frequency of concurrent macular neovascularization (MNV) among selected eyes with author‐defined shallow irregular retinal pigment epithelium (RPE) elevations in age‐related macular degeneration (AMD) and chronic central serous chorioretinopathy (CSC).
Mehmet Cem Sabaner, Irem Gunes, Rodrigo Anguita, Elon H. C. van Dijk, Lorenzo Ferro Desideri, Lasse Jørgensen Cehofski, Prithvi Ramtohul, Yousif Subhi   +7 more
wiley   +1 more source

Sudden transitions and grand variations in the solar dynamo, past and future☆

Journal of Space Weather and Space Climate, 2012
The solar dynamo is the exotic dance of the sun’s two major magnetic field components, the poloidal and the toroidal, interacting in anti-phase. On the basis of new data on the geomagnetic aa index, we improve our previous forecast of the properties of ...
De Jager Cornelis, Duhau Silvia
doaj   +1 more source

Regional growth kinetics of geographic atrophy in age‐related macular degeneration with and without fovea‐sparing

Acta Ophthalmologica, EarlyView.
Abstract Purpose Fovea‐sparing geographic atrophy (GA) patients retain near‐normal central vision. To better understand GA progression in relation to the fovea, we performed a semi‐automated image analysis of regional atrophy growth in a long‐term GA natural‐history cohort. Methods Prospective‐observational, single‐centre‐study (02/2013–07/2025) at the
Daniel R. Muth, Abinaya P. Venkataraman, Alberto Dominguez‐Vicent, Goran Petrovski, Pete A. Williams, Laurence Quérat, Filippo Locri, Sandrine A. Zweifel, Anders Kvanta   +8 more
wiley   +1 more source

Probable Value for the Next Sunspot Minimum

Advances in Astronomy, 2014
Gumbel’s first distribution is applied to smoothed monthly mean sunspot numbers for solar cycles 10 to 24. According to that, the next minimum for solar cycle 24-25 transition would be the deepest solar minimum of the last 150 years.
Virginia Mabel Silbergleit
doaj   +1 more source

Optic nerve head blood flow autoregulation during isometric exercise in primary open‐angle glaucoma assessed by laser speckle flowgraphy

Acta Ophthalmologica, EarlyView.
Abstract Purpose To assess optic nerve head blood flow (ONHBF) autoregulation in patients with early‐ to moderate‐stage primary open‐angle glaucoma (POAG) and age‐ and sex‐matched healthy controls using laser speckle flowgraphy (LSFG) and isometric handgrip exercise.
Theresa Lindner, Viktoria Pai, Patrick Janku, Nikolaus Hommer, Anton Hommer, Liudmyla Petric, Ulrich Graf, Leopold Schmetterer, Gerhard Garhöfer, Doreen Schmidl   +9 more
wiley   +1 more source

Impact of retinal break location on surgical outcomes in primary uncomplicated rhegmatogenous retinal detachment: Superior versus inferior breaks

Acta Ophthalmologica, EarlyView.
Abstract Purpose To compare the anatomical and functional outcomes of pars plana vitrectomy (PPV) for primary uncomplicated rhegmatogenous retinal detachment (RRD) with superior versus inferior retinal breaks. Methods This retrospective study included 675 eyes of 675 patients, of which 476 had exclusively superior breaks and 199 had at least one ...
Ioanna Dimakopoulou, Michael Georgopoulos, Philipp Toubia Scholz, Jakob Kraiger, Johannes Iby, Sam Hedo, Stefan Sacu, Georgios Mylonas   +7 more
wiley   +1 more source

Modelling for a Series of Annual Extreme Values of the Daily Sunspot Numbers [PDF]

This paper deals with a statistical time series modelling for annual extreme values of a daily averages of the International relative sunspot number. We focus on two time series of annual maximum and minimum sunspot numbers, and individually we consider ...
Tanaka, Minoru
core   +1 more source

Nearly doubled incidence of surgically treated primary rhegmatogenous retinal detachment in Southern Sweden, 2011–2025

Acta Ophthalmologica, EarlyView.
Abstract Purpose To determine the incidence of surgically treated primary rhegmatogenous retinal detachment (RRD) in Southern Sweden between 2011 and 2025, and to examine whether demographic change or risk factor trends account for any change in incidence.
Pernilla Rosenquist, Joakim Thylefors
wiley   +1 more source