Results 41 to 50 of about 45,818 (266)

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

Glare, a GIS tool to reconstruct the 3D surface of palaeoglaciers [PDF]

open access: yes, 2016
Acknowledgements This research has been supported by the Leverhulme Trust International Network Grant IN-2012-140. Processing and collecting of ground penetrating data in Forgefonna was part of Elend Førre's master's project that was completed in 2009 at
Bakke, Jostein   +9 more
core   +4 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

Piercing the Glare: Direct Imaging Search for Planets in the Sirius System [PDF]

open access: yes, 2011
Astrometric monitoring of the Sirius binary system over the past century has yielded several predictions for an unseen third system component, the most recent one suggesting a \leq50 MJup object in a ~6.3-year orbit around Sirius A.
Allard   +17 more
core   +3 more sources

Motion processing deficits in migraine are related to contrast sensitivity [PDF]

open access: yes, 2012
Background: There are conflicting reports concerning the ability of people with migraine to detect and discriminate visual motion. Previous studies used different displays and none adequately assessed other parameters that could affect performance, such ...
Beaumont, H.M.   +2 more
core   +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

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

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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