Results 31 to 40 of about 3,918 (223)

On the asphericity of a family of relative group presentations

open access: yes, 2009
Excluding four unresolved cases, we give a classification of asphericity in relative presentations of the form 〈H, t; tnat-1b〉 where the orders of a and b are both at least ...
Davidson, P.J.
core   +4 more sources

On the asphericity of a family of positive relative group presentations [PDF]

open access: yes, 2017
Excluding four exceptional cases, the asphericity of the relative presentation P= ⟨G; x|xmgxh⟩ for m ≥ 2 is determined.
Aldwaik, Suzana, Edjvet, Martin
core   +1 more source

Influence of Intraocular Lens Asphericity and Blue Light Filtering on Visual Outcome, Contrast Sensitivity, and Aberrometry after Uneventful Cataract Extraction

open access: yesJournal of Ophthalmic & Vision Research, 2020
Purpose: To evaluate the effect of asphericity and blue light filter (BLF) of three different intraocular lenses (IOLs) on the visual performance, second- and third-order aberrations (defocus, coma, trefoil), and contrast sensitivity after uneventful ...
Argyrios Tzamalis   +4 more
doaj   +1 more source

A comparison of lidar depolarization and particle asphericity in high altitude clouds

open access: yes, 2021
We present and discuss the comparison between particle depolarization measurement observed in-situ by a backscattersonde (MAS) and particle asphericity measured by an optical particle counter and sizer with detector for particle asphericity (NIXE-CAPS ...
Snels, Marcel   +10 more
core   +1 more source

Asphericity of symmetric presentations [PDF]

open access: yes, 2006
Using the notion of relative presentation due to Bogley and Pride, we give a new proof of a theorem of Prishchepov on the asphericity of certain symmetric presentations of groups.
F. Spaggiari   +2 more
core   +1 more source

Visual Performance after AcrySof ReSTOR Aspheric Intraocular Lens Implantation

open access: yesJournal of Optometry, 2008
Purpose: To evaluate distance, intermediate and near visual performance in patients who had undergone implantation of the multifocal aspheric AcrySof ReSTOR intraocular lens (IOL).
José F. Alfonso   +3 more
doaj   +1 more source

Multi-aspheric description of the myopic cornea after different refractive treatments and its correlation with corneal higher order aberrations

open access: yesJournal of Optometry, 2012
Background: To analyse the asphericity of the anterior corneal surface (ACS) for different diameters, and correlate those values with corneal higher order aberrations (cHOA) before and after myopic treatments with corneal refractive therapy (CRT) for ...
António Queirós   +4 more
doaj   +1 more source

Age-related variations in corneal asphericity and long-term changes

open access: yes, 2019
Purpose: Corneal front-surface asphericity is directly related with the optical quality of the eye and with contact lenses fitting. The purpose of this study was to evaluate the corneal asphericity as a function of age, sex, and refractive error measured ...
Vieira, Ana Cláudia   +7 more
core   +1 more source

Asphericity of symmetric presentations

open access: yes, 2021
Using the notion of relative presentation due to Bogley and Pride, we give a new proof of a theorem of Prishchepov on the asphericity of certain symmetric presentations of groups.
Spaggiari, F.
core  

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