Results 31 to 40 of about 45,642 (272)

Digital eye strain among undergraduate medical students during the COVID-19 pandemic: A cross-sectional survey

open access: yesKerala Journal of Ophthalmology, 2021
Background and Objective of the Study: The COVID-19 pandemic has increased the use of online platforms for education. This may lead to digital eye strain (DES) in the student community.
Ferzana Mohammed   +2 more
doaj   +1 more source

Differences in early and late pattern-onset visual-evoked potentials between self- reported migraineurs and controls

open access: yesNeuroImage: Clinical, 2020
Striped patterns have been shown to induce strong visual illusions and discomforts to migraineurs in previous literature. Previous research has suggested that these unusual visual symptoms to be linked with the hyperactivity on the visual cortex of ...
Chun Yuen Fong   +3 more
doaj   +1 more source

Vertical Skylight Pattern Optimization for Public Spaces: Daylighting and Visual Comfort Analysis for Changing the Shape of Sawtooth Opening in Airport’s Holding Room in Cairo [PDF]

open access: yesPort Said Engineering Research Journal, 2018
Well daylit public space, which ensures visual comfort, is one of the key design goals that architects and lighting designers seek. The public space such as airport’s waiting hall is characterized by large dimensions which can get efficient daylighting ...
Khalid Younes   +3 more
doaj   +1 more source

Three Lyα emitters at z~6 : early GMOS/Gemini data from the GLARE project [PDF]

open access: yes, 2004
We report spectroscopic detection of three z ∼ 6 Lyα-emitting galaxies, in the vicinity of the Hubble Ultra Deep Field, from the early data of the Gemini Lyman Alpha at Reionisation Era (GLARE) project.
Andrew J. Bunker   +19 more
core   +3 more sources

Energy-resolved neutron imaging for reconstruction of strain introduced by cold working [PDF]

open access: yes, 2018
Energy-resolved neutron transmission imaging is used to reconstruct maps of residual strains in drilled and cold-expanded holes in 5-mm and 6.4-mm-thick aluminum plates.
Fitzpatrick, Michael E.   +5 more
core   +1 more source

Evaluation of lighting conditions in portable classrooms and analysis for alternative daylighting systems [PDF]

open access: yes, 2017
Lighting conditions in multiple classrooms in central Texas were assessed, and the feasibility of improving portable classroom daylighting via alternative daylighting systems was also evaluated.
Zhang, Yan, M.S. in Engineering
core   +1 more source

Design and Prototyping of Efficient LED Counter Beam Light with Free-Formed Surface for Meeting International Tunnel Lighting Standards

open access: yesEnergies, 2021
An LED Counter Beam Light (CBL) with a free surface secondary lens is proposed to enhance the safety and efficiency of tunnels. The secondary lens was designed and produced to be mounted on a 50 W white-light LED array to generate the targeted counter ...
Hsing-Yuan Liao   +9 more
doaj   +1 more source

Study on Daylighting Optimization in the Exhibition Halls of Museums for Chinese Calligraphy and Painting Works

open access: yesEnergies, 2020
With respect to the light environment of the exhibition halls for Chinese calligraphy and painting works in the museums, the daylighting design in these display spaces have been studied, the key design factors, such as daylighting pattern, and ...
Xianfeng Huang   +2 more
doaj   +1 more source

The Effect of Parametric Patterned Façade Variations on Daylight Quality, Visual Comfort, and Daylight Performance in Architecture Studio-Based Tutoring

open access: yesJournal of Daylighting, 2023
Parametric design influences on building envelope design are exponentially increasing in the current era due to the dominance of computational design on architectural outcomes.
Yasmine Mahmoud Saad Abdelhamid   +2 more
doaj   +1 more source

Single-shot detection of 8 unique monochrome fringe patterns representing 4 distinct directions via multispectral fringe projection profilometry

open access: yesScientific Reports, 2021
Spatial resolution in three-dimensional fringe projection profilometry is determined in large part by the number and spacing of fringes projected onto an object. Due to the intensity-based nature of fringe projection profilometry, fringe patterns must be
Parsa Omidi   +3 more
doaj   +1 more source

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