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| Author |
Point, S. |
| Title |
Blue Light Hazard: are exposure limit values protective enough for newborn infants? |
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Journal Article |
| Year |
2018 |
Publication |
Radioprotection |
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| Volume |
53 |
Issue |
3 |
Pages |
219-224 |
| Keywords |
Human Health |
| Abstract |
Blue Light Hazard is an emerging concern for health of population. Nevertheless, acute exposure to blue rays from artificial light is well taken into account by normative requirements applicable to lamps engineering and risk for general population is low. There is also no evidence for a chronic effect of artificial lighting on retina for general population at radiance below exposure limit values. That said, children in the very first years of life constitute a specific population to consider. On one side, eye anatomy of very young infants is different from elder young people or adults. On the other side, infants can be in close contact with some luminous toys or night lights. This paper presents a first approach for taking into account the specific anatomy of newborn infants’ eyes in blue light hazard evaluation. Results show that differences of crystalline lens transparency, focal length and pupil diameter could induce a significantly higher retinal exposure than for adult. |
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GFZ @ kyba @ |
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1982 |
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Kinzey, B.R.; Perrin, T.E.; Miller, N.J.; Kocifaj, M.; Aubé, M.; Lamphar, H.A. |
| Title |
An investigation of LED street lighting's impact on sky glow |
Type |
Journal Article |
| Year |
2017 |
Publication |
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| Volume |
PNNL-26411 |
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| Keywords |
Skyglow; Lighting |
| Abstract |
A significant amount of public attention has recently focused on perceived impacts of converting street lighting from incumbent lamp-based products to LED technology. Much of this attention pertains to the higher content of short wavelength light (commonly referred to as “blue light”) of LEDs and its attendant influences on sky glow (a brightening of the night sky that can interfere with astronomical observation and may be associated with a host of other issues). The complexity of this topic leads to common misunderstandings and misperceptions among the public, and for this reason the U.S. Department of Energy Solid-State Lighting Program embarked on a study of sky glow using a well-established astronomical model to investigate some of the primary factors influencing sky glow. This report details the results of the investigation and attempts to present those results in terms accessible to the general lighting community. The report also strives to put the results into a larger context, and help educate interested readers on various topics relevant to the issues being discussed. |
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Pacific Northwest National Lab. (PNNL), Richland, WA (United States) |
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GFZ @ kyba @ |
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2014 |
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| Author |
Ashford, O.M. |
| Title |
A portable cloud searchlight |
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Journal Article |
| Year |
1947 |
Publication |
Weather |
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2 |
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103-104 |
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Remote Sensing |
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GFZ @ kyba @ |
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2044 |
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| Author |
Bergs, R.; Issa, M. |
| Title |
What do night satellite images and small-scale grid data tell us about functional changes in the rural-urban environment and the economy? Case studies Frankfurt-Rhein/Main and Ljubljana Urban Region |
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Journal Article |
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2018 |
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Remote Sensing |
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This study addresses how nocturnal satellite imagery can be used in spatial analysis of rural-urban relations. It shows how a novel approach can be used to complement the prevalent traditional survey methods below the data resolution level of official regional statistics. The overarching aim is to contribute with a novel database and different empirical tools to broaden spatial information for decision-making in policy and planning at small spatial scale amongst municipalities. The accuracy of spatial information is expected to be substantially enhanced, paving ways for better rural-urban planning coordination and synergies. |
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PRAC - Bergs & Issa Partnership Co. , Im Hopfengarten 19b, D - 65812 Bad Soden, Germany |
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GFZ @ kyba @ |
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2047 |
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| Author |
Wang, J., Zhang, J., Gong, L., Li, Q., Zhou, D. |
| Title |
Seismic Indirect Economic Loss Assessment and Recovery Evaluation Using Night-time Light Images – Application for Wenchuan Earthquake |
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Journal Article |
| Year |
2018 |
Publication |
Natural Hazards and Earth System Sciences |
Abbreviated Journal |
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In press |
Issue |
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| Keywords |
Remote Sensing; Economics |
| Abstract |
Seismic indirect economic loss not only has a major impact on regional economic recovery policies, but also related to the economic assistance at the national level. Due to the Cross-regional economic activities and the difficulty of obtaining data, it's difficult that the indirect economic loss survey covers all economic activities. However, night-time light in an area can reflect the economic activity of the region. This paper focuses on the indirect economic losses caused by the Wenchuan earthquake in 2008 and evaluated the progress of restoration and reconstruction based on night-time light Images. First, the functional relationship between GDP and night-time light parameters was established based on the pre-earthquake data. Next, the indirect loss of the earthquake was evaluated by the night-time light attenuation in the disaster area after the earthquake. Then, the capacity recovery, which is characterized by the brightness recovery process of the light area, was evaluated. Lastly, the process of light expansion in the disaster area was analyzed to evaluate the economic expansion speed and efficiency. |
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NC @ ehyde3 @ |
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2064 |
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