Results 31 to 40 of about 1,690 (116)

Diagnosis of Coronal Mass Ejections through Local and Global Dimmings

open access: yesThe Astrophysical Journal
Coronal dimmings are localized sharp reductions in soft X-ray and extreme ultraviolet (EUV) emission at the early expansion phase of coronal mass ejections (CMEs). Such local dimmings have global responses, known as Sun-as-a-star or global dimmings. Here,
Tao Ding, Jun Zhang, Ting Li
doaj   +1 more source

Impact of high-resolution matrix backlight on local-dimming performance and its characterization

open access: yesJournal of Information Display, 2019
In this paper, the general aspects of backlight unit design are considered as a whole. A new key parameter for BLU design, the FWHM to pitch ratio, is introduced and a reasonable value will be proposed.
Maxim Schmidt   +4 more
doaj   +1 more source

Light in airport interior design, considering its pollution effects on ecosystems [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2020
"When we add light to the environment, that has the potential to disrupt habitat, just like running a bulldozer over the landscape can." Scientific evidence suggests that artificial light at night has adverse and deadly effects on many creatures ...
Igor Danisovich Valeev   +2 more
doaj   +1 more source

Adjusting the Lights: Prohibition Was Not Flipped On and Off Like a Switch

open access: yesEssays in Economic and Business History, 2022
Prohibition (1920-1933) in the United States is generally viewed as a period with a defined beginning and end. When one factors state and local bans into the discussion, however, the issue is much more complicated.
Eline Poelmans, Jason E. Taylor
doaj  

PEARLS: Low Stellar Density Galaxies in the El Gordo Cluster Observed with JWST

open access: yesThe Astrophysical Journal, 2023
A full understanding of how unusually large ultradiffuse galaxies (UDGs) fit into our conventional theory of galaxy formation remains elusive, despite the large number of objects identified locally.
Timothy Carleton   +25 more
doaj   +1 more source

Validation of the SARAH-E Satellite-Based Surface Solar Radiation Estimates over India

open access: yesRemote Sensing, 2018
We evaluate the accuracy of the satellite-based surface solar radiation dataset called Surface Solar Radiation Data Set - Heliosat (SARAH-E) against in situ measurements over a variety of sites in India between 1999 and 2014.
Aku Riihelä   +4 more
doaj   +1 more source

What is the effect of reduced street lighting on crime and road traffic injuries at night? A mixed-methods study

open access: yesPublic Health Research, 2015
Background: Some local authorities have reduced street lighting at night to save energy, but little is known about impacts on public health or about public concerns about impacts on well-being.
Chloe Perkins   +7 more
doaj   +1 more source

Improving Edge Quality of Liquid Crystal Display 3D Printing Using Local Dimming Method

open access: yesIEEE Photonics Journal
The burgeoning advancements in Light Emitting Diode (LED) technology have opened avenues for applications beyond traditional display and lighting, notably in the realm of 3D printing.
Xing-Rui Ding   +5 more
doaj   +1 more source

Exploring the severe winter haze in Beijing: the impact of synoptic weather, regional transport and heterogeneous reactions [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
Extreme haze episodes repeatedly shrouded Beijing during the winter of 2012–2013, causing major environmental and health problems. To better understand these extreme events, we performed a model-assisted analysis of the hourly observation data of PM2.5 ...
G. J. Zheng   +12 more
doaj   +1 more source

Diamond Patterns: Cumulative Cornsweet Effects and Motion-Induced Brightening

open access: yesi-Perception, 2018
A Cornsweet edge creates the perception of a step in surface lightness between two adjacent regions of identical mean luminance due to a gradient on both sides.
Patrick Cavanagh, Stuart Anstis
doaj   +1 more source

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