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Author Sánchez, S. F.; Aceituno, J.; Thiele, U.; Pérez-Ramírez, D.; Alves, J.
Title The Night Sky at the Calar Alto Observatory Type Journal Article
Year (up) 2007 Publication Publications of the Astronomical Society of the Pacific Abbreviated Journal Publ Astron Soc Pac
Volume 119 Issue 860 Pages 1186-1200
Keywords Skyglow, Darkness
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ISSN 0004-6280 ISBN Medium
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Notes Approved no
Call Number LoNNe @ christopher.kyba @ Serial 1131
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Author Sloane, P.D.; Williams, C.S.; Mitchell, C.M.; Preisser, J.S.; Wood, W.; Barrick, A.L.; Hickman, S.E.; Gill, K.S.; Connell, B.R.; Edinger, J.; Zimmerman, S.
Title High-intensity environmental light in dementia: effect on sleep and activity Type Journal Article
Year (up) 2007 Publication Journal of the American Geriatrics Society Abbreviated Journal J Am Geriatr Soc
Volume 55 Issue 10 Pages 1524-1533
Keywords Human Health
Abstract OBJECTIVES: To determine whether high-intensity ambient light in public areas of long-term care facilities will improve sleeping patterns and circadian rhythms of persons with dementia. DESIGN: A cluster-unit crossover intervention trial involving four conditions: morning bright light, evening bright light, all-day bright light, and minimum standard light. SETTING: The common areas of two geriatric units in a psychiatric hospital and a dementia-specific residential care facility. PARTICIPANTS: Sixty-six older adults with dementia. INTERVENTION: Ambient bright light of approximately 2,500 lux, delivered through a low-glare lighting system installed in the dining and activity areas. Participant exposure averaged 2.5 to 3.0 hours for the morning and evening interventions and 8.4 hours for the all-day intervention. MEASUREMENTS: Nighttime sleep using wrist actigraphy and daytime activity using nonobtrusive daytime observations. RESULTS: Night-time sleep increased significantly in participants exposed to morning and all-day light, with the increase most prominent in participants with severe or very severe dementia (mean increase 16 minutes (P=.008) for morning, and 14 minutes (P=.01) for all-day). Morning light produced a mean phase advance of 29 minutes (P=.02) and evening light a mean phase delay of 15 minutes (P=.06). Effects on daytime sleepiness were inconsistent, and the number of sleep bouts, mesor, amplitude, intradaily variability, and interdaily stability were not significantly different, indicating that the overall strength of day and night activity rhythms did not change significantly under any treatment condition. CONCLUSION: Bright light appears to have a modest but measurable effect on sleep in this population, and ambient light may be preferable to stationary devices such as light boxes.
Address Department of Family Medicine, School of Medicine; Cecil G.Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, NC, USA. psloane@med.unc.edu
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Language English Summary Language Original Title
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ISSN 0002-8614 ISBN Medium
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Notes PMID:17714459 Approved no
Call Number GFZ @ kyba @ Serial 2168
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Author Elvidge, C.D.; Safran, J.; Tuttle, B.; Sutton, P.; Cinzano, P.; Pettit, D.; Arvesen, J.; Small, C.
Title Potential for global mapping of development via a nightsat mission Type Journal Article
Year (up) 2007 Publication GeoJournal Abbreviated Journal GeoJournal
Volume 69 Issue 1-2 Pages 45-53
Keywords Remote Sensing
Abstract Nightsat is a concept for a satellite system capable of global observation of the location, form and density of lighted infrastructure and development within human settlements. Nightsat’s repeat cycle should be sufficient to produce an annual cloud-free composite of surface lighting to enable detection of growth rates. Airborne and satellite imagery have been used to define the range of spatial, spectral, and detection limit options for a future Nightsat mission. Our conclusion is that Nightsat should collect data from a near-synchronous orbit in the early evening with 50–100 m spatial resolution and have detection limits of 2.5E−8 W cm−2 sr−1 μm−1 or better. Multispectral low-light imaging data would be better than panchromatic data by providing valuable information on the type or character of lighting, a potentially stronger predictor of variables such as ambient population density and economic activity.
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ISSN 0343-2521 ISBN Medium
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Notes Approved no
Call Number GFZ @ kyba @ Serial 2439
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Author Aubrecht, C.; Elvidge, C. D.; Ziskin, D.; Longcore, T.; Rich, C.
Title 'When the lights stay on' – A novel approach to assessing human impact on the environment. Earth. Type Journal Article
Year (up) 2008 Publication Earthzine Abbreviated Journal
Volume Issue Pages
Keywords Ecology
Abstract A consequence of the explosive expansion of human civilization has been the global loss of biodiversity and changes to life-sustaining geophysical processes of Earth. The footprint of human occupation is uniquely visible from space in the form of artificial night lighting – ranging from the burning of the rainforest to massive offshore fisheries to omnipresent lights of cities, towns, and villages. This article describes a novel approach to assessing global human impact using satellite observed nighttime lights. The results provide reef managers and governments a first-pass screening tool for reef conservation projects. Sites requiring restoration and precautionary actions can be identified and assessed further in more focused investigations. We hope to create a mental picture for others to see and encourage participation in maintaining and restoring the natural world.
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Notes Approved no
Call Number LoNNe @ schroer @ Serial 569
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Author Agnew, J.; Gillespie, T.W.; Gonzalez, J.; Min, B.
Title Baghdad Nights: Evaluating the US Military ‘Surge’ Using Nighttime Light Signatures Type Journal Article
Year (up) 2008 Publication Environment and Planning A Abbreviated Journal Environ Plan A
Volume 40 Issue 10 Pages 2285-2295
Keywords Remote Sensing; Commentary
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ISSN 0308-518X ISBN Medium
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Notes Approved no
Call Number GFZ @ kyba @ Serial 2028
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