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Author Mace, B.L.; McDaniel, J.
Title Visitor Evaluation of Night Sky Interpretation in Bryce Canyon National Park and Cedar Breaks National Monument Type Journal Article
Year 2013 Publication Journal of Interpretation Research Abbreviated Journal J. of Interp. Res.
Volume 18 Issue (up) 2 Pages 39-57
Keywords parks; interpretation; social studies; Bryce Canyon National Park; Cedar Breaks National Monument; dark skies
Abstract Natural lightscapes are an important resource for parks and protected areas, including Bryce Canyon National Park and Cedar Breaks National Monument. Both locations offer night sky interpretive programs, attracting over 27,000 visitors annually, equaling all other interpretive programs combined. Parks need to understand what drives visitor interest and park managers need to assess if night sky interpretation is meeting expectations. A total of 1,179 night and day visitors to Bryce Canyon National Park and Cedar Breaks National Monument served as participants and completed a 36-item survey measuring knowledge, attitudes, benefits, and behaviors related to the night sky. Results show those who attended a night sky interpretive program gained a significant amount of knowledge about night sky issues. Both day and night visitors have strongly held attitudes about light pollution and the protection of the night sky in national parks.
Address Department of Psychology, Southern Utah University, Cedar City, UT 84720 USA
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Notes Approved no
Call Number IDA @ john @ Serial 374
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Author Chamorro, E.; Bonnin-Arias, C.; Perez-Carrasco, M.J.; Munoz de Luna, J.; Vazquez, D.; Sanchez-Ramos, C.
Title Effects of light-emitting diode radiations on human retinal pigment epithelial cells in vitro Type Journal Article
Year 2013 Publication Photochemistry and Photobiology Abbreviated Journal Photochem Photobiol
Volume 89 Issue (up) 2 Pages 468-473
Keywords Human Health; Apoptosis/*radiation effects; Biological Markers/metabolism; Caspases/metabolism; Cell Survival/radiation effects; DNA Damage; Epithelial Cells/cytology/metabolism/*radiation effects; Histones/metabolism; Humans; Light; Membrane Potential, Mitochondrial/*radiation effects; Mitochondria/*radiation effects; Photoperiod; Primary Cell Culture; Reactive Oxygen Species/metabolism; Retinal Pigment Epithelium/cytology/metabolism/*radiation effects
Abstract Human visual system is exposed to high levels of natural and artificial lights of different spectra and intensities along lifetime. Light-emitting diodes (LEDs) are the basic lighting components in screens of PCs, phones and TV sets; hence it is so important to know the implications of LED radiations on the human visual system. The aim of this study was to investigate the effect of LEDs radiations on human retinal pigment epithelial cells (HRPEpiC). They were exposed to three light-darkness (12 h/12 h) cycles, using blue-468 nm, green-525 nm, red-616 nm and white light. Cellular viability of HRPEpiC was evaluated by labeling all nuclei with DAPI; Production of reactive oxygen species (ROS) was determined by H2DCFDA staining; mitochondrial membrane potential was quantified by TMRM staining; DNA damage was determined by H2AX histone activation, and apoptosis was evaluated by caspases-3,-7 activation. It is shown that LED radiations decrease 75-99% cellular viability, and increase 66-89% cellular apoptosis. They also increase ROS production and DNA damage. Fluorescence intensity of apoptosis was 3.7% in nonirradiated cells and 88.8%, 86.1%, 83.9% and 65.5% in cells exposed to white, blue, green or red light, respectively. This study indicates three light-darkness (12 h/12 h) cycles of exposure to LED lighting affect in vitro HRPEpiC.
Address Neuro-Computing and Neuro-Robotics Research Group, Universidad Complutense de Madrid, Madrid, Spain. eva.chamorro@opt.ucm.es
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Language English Summary Language Original Title
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ISSN 0031-8655 ISBN Medium
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Notes PMID:22989198 Approved no
Call Number LoNNe @ christopher.kyba @ Serial 511
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Author Solano Lamphar, H.A.; Kocifaj, M.
Title Light pollution in ultraviolet and visible spectrum: effect on different visual perceptions Type Journal Article
Year 2013 Publication PloS one Abbreviated Journal PLoS One
Volume 8 Issue (up) 2 Pages e56563
Keywords Lighting; Animals; *Environmental Pollution; Humans; Insects; Light; Lighting/*adverse effects; Models, Theoretical; *Visual Perception
Abstract In general terms, lighting research has been focused in the development of artificial light with the purpose of saving energy and having more durable lamps. However, the consequences that artificial night lighting could bring to the human being and living organisms have become an important issue recently. Light pollution represents a significant problem to both the environment and human health causing a disruption of biological rhythms related not only to the visible spectrum, but also to other parts of the electromagnetic spectrum. Since the lamps emit across a wide range of the electromagnetic spectrum, all photobiological species may be exposed to another type of light pollution. By comparing five different lamps, the present study attempts to evaluate UV radiative fluxes relative to what humans and two species of insects perceive as sky glow level. We have analyzed three atmospheric situations: clear sky, overcast sky and evolving precipitable water content. One important finding suggests that when a constant illuminance of urban spaces has to be guaranteed the sky glow from the low pressure sodium lamps has the most significant effect to the visual perception of the insects tested. But having the fixed number of luminaires the situation changes and the low pressure sodium lamp would be the best choice for all three species. The sky glow effects can be interpreted correctly only if the lamp types and the required amount of scotopic luxes at the ground are taken into account simultaneously. If these two factors are combined properly, then the ecological consequences of sky glow can be partly reduced. The results of this research may be equally useful for lighting engineers, architects, biologists and researchers who are studying the effects of sky glow on humans and biodiversity.
Address ICA, Slovak Academy of Sciences, Bratislava, Slovak Republic. lamphar@gmail.com
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ISSN 1932-6203 ISBN Medium
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Notes PMID:23441205; PMCID:PMC3575508 Approved no
Call Number LoNNe @ schroer @ Serial 578
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Author Jackett, M.; Frith, W.
Title Quantifying the impact of road lighting on road safety -- A New Zealand Study Type Journal Article
Year 2013 Publication IATSS Research Abbreviated Journal IATSS Research
Volume 36 Issue (up) 2 Pages 139-145
Keywords Lighting; roadway lighting; road safety; traffic safety; public safety
Abstract It is well known from the literature that road lighting has significant safety benefits. The NZTA Economic Evaluation Manual (EEM) quotes a 35% reduction in crashes as the effect of upgrading or improving lighting where lighting is poor.

However, no well-established dose–response relationship to lighting parameters exists from which one can deduce benchmark levels of lighting for safety.

This study looked at a sample of street lighting installations spread over the urban areas of nine territorial local authorities. Standard street lighting parameters were measured in the field using a variety of instruments including illuminance meter, luminance meter and digital camera. Field measurements were related to the ratio of night-time to day time crashes as a measure of night time safety vis-a-vis daytime safety.

A statistically significant dose–response relationship was found between average road luminance and safety across all traffic volume groups, with an indication that the relationship may be stronger where more serious crashes are involved.

Threshold increment was also a significant variable but not so longitudinal uniformity or overall uniformity.

The results related to luminance will allow practitioners to better estimate the safety benefits of different levels of lighting resulting in better targeting of expenditure.
Address Jackett Consulting, Lower Hutt, New Zealand; jackett(at)paradise.net.nz
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language English Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0386-1112 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 638
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Author Edensor, T.; Millington, S.
Title Blackpool Illuminations: revaluing local cultural production, situated creativity and working-class values Type Journal Article
Year 2013 Publication International Journal of Cultural Policy Abbreviated Journal International Journal of Cultural Policy
Volume 19 Issue (up) 2 Pages 145-161
Keywords Society
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Language Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 1028-6632 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 1033
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