Results 31 to 40 of about 70,686 (289)

Simulation Based Evaluation of Time Series for Syndromic Surveillance of Cattle in Switzerland

open access: yesFrontiers in Veterinary Science, 2019
Choosing the syndrome time series to monitor in a syndromic surveillance system is not a straight forward process. Defining which syndromes to monitor in order to maximize detection performance has been recently identified as one of the research ...
Céline Faverjon   +3 more
doaj   +1 more source

Effect of Spherical Aberration on the Optical Quality after Implantation of Two Different Aspherical Intraocular Lenses

open access: yesJournal of Ophthalmology, 2017
Purpose. To compare the effect of spherical aberration on optical quality in eyes with two different aspherical intraocular lenses. Methods. 120 eyes of 60 patients underwent phacoemulsification.
Michael Lasta   +3 more
doaj   +1 more source

The Infrared Imaging Spectrograph (IRIS) for TMT: optical design of IRIS imager with "Co-axis double TMA" [PDF]

open access: yes, 2016
IRIS (InfraRed Imaging Spectrograph) is one of the first-generation instruments for the Thirty Meter Telescope (TMT). IRIS is composed of a combination of near-infrared (0.84--2.4 $\mu$m) diffraction limited imager and integral field spectrograph.
Harakawa, Hiroki   +12 more
core   +3 more sources

Analysis and interpretation of the Seidel aberration coefficients in digital holography [PDF]

open access: yes, 2011
Peer reviewedPublisher ...
Champagne   +10 more
core   +1 more source

Impact of tear optics on the repeatability of Pentacam AXL wave and iTrace in measuring anterior segment parameters and aberrations

open access: yesIndian Journal of Ophthalmology, 2022
Purpose: To assess impact of tear optics on repeatability of a Scheimpflug device with a Hartmann Shack aberrometer and a ray tracing aberrometer. Methods: One hundred healthy and 100 postrefractive surgery eyes underwent dry eye evaluation including ...
GairikKundu   +6 more
doaj   +1 more source

A general theory of minimum aberration and its applications

open access: yes, 2005
Minimum aberration is an increasingly popular criterion for comparing and assessing fractional factorial designs, and few would question its importance and usefulness nowadays.
Cheng, Ching-Shui, Tang, Boxin
core   +1 more source

Uniform fractional factorial designs

open access: yes, 2012
The minimum aberration criterion has been frequently used in the selection of fractional factorial designs with nominal factors. For designs with quantitative factors, however, level permutation of factors could alter their geometrical structures and ...
Lin, Dennis K. J.   +2 more
core   +1 more source

Entropy-based study of imaging quality in holographic optical elements [PDF]

open access: yes, 1994
A method for obtaining the best image plane for holographic optical elements by the use of the concept of entropy is described. This method is applied to in-line holographic lenses with different values of spherical aberration.
Beléndez Vázquez, Augusto   +2 more
core   +2 more sources

Precise Orbit Determination Based on the Unscented Transform for Optical Observations

open access: yesJournal of Astronomy and Space Sciences, 2019
In this study, the precise orbit determination (POD) software is developed for optical observation. To improve the performance of the estimation algorithm, a nonlinear batch filter, based on the unscented transform (UT) that overcomes the disadvantages ...
Hyewon Hwang, Eunji Lee, Sang-Young Park
doaj   +1 more source

Some results on $2^{n-m}$ designs of resolution IV with (weak) minimum aberration

open access: yes, 2009
It is known that all resolution IV regular $2^{n-m}$ designs of run size $N=2^{n-m}$ where $5N ...
Chen, Hegang H., Cheng, Ching-Shui
core   +1 more source

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