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Author Lyytimäki, J.; Rinne, J. url  doi
openurl 
  Title Voices for the darkness: online survey on public perceptions on light pollution as an environmental problem Type Journal Article
  Year 2013 Publication Journal of Integrative Environmental Sciences Abbreviated Journal Journal of Integrative Environmental Sciences  
  Volume 10 Issue 2 Pages 127-139  
  Keywords environmental management; light pollution; public perceptions; survey; public policy  
  Abstract Light pollution is increasingly affecting ecosystems and human health. We present results from an online survey aimed to chart what aspects of lighting are considered harmful and how light pollution is perceived by the public. We focus on affluent societies by using Finland as an example of a northern industrialised country. The survey generated 2053 responses, particularly from well-educated urban persons living in residential areas and interested in astronomy or environmental issues. The results show that the lighting of residential areas and lighting serving traffic are considered the most common sources of light pollution while commercial lighting is perceived as the most annoying form of light use. Respondents commonly considered light pollution as a disturbance for outdoor recreation and relaxation. The results suggest that the ecological and health effects of light pollution emphasised by the research are poorly known by the people emphasising the aesthetic aspects. The results indicate relatively wide but passive acceptance for policy measures aimed at reducing light pollution.  
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  ISSN 1943-815X ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 248  
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Author Davies, T.W.; Bennie, J.; Inger, R.; Gaston, K.J. url  doi
openurl 
  Title Artificial light alters natural regimes of night-time sky brightness Type Journal Article
  Year 2013 Publication Scientific Reports Abbreviated Journal Sci. Rep.  
  Volume 3 Issue Pages  
  Keywords Artificial light; light at nightl skyglow; measurements  
  Abstract Artificial light is globally one of the most widely distributed forms of anthropogenic pollution. However, while both the nature and ecological effects of direct artificial lighting are increasingly well documented, those of artificial sky glow have received little attention. We investigated how city lights alter natural regimes of lunar sky brightness using a novel ten month time series of measurements recorded across a gradient of increasing light pollution. In the city, artificial lights increased sky brightness to levels six times above those recorded in rural locations, nine and twenty kilometers away. Artificial lighting masked natural monthly and seasonal regimes of lunar sky brightness in the city, and increased the number and annual regime of full moon equivalent hours available to organisms during the night. The changes have potentially profound ecological consequences.  
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  Series Volume Series Issue Edition  
  ISSN 2045-2322 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 255  
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Author Sciezor, T. url  doi
openurl 
  Title A new astronomical method for determining the brightness of the night sky and its application to study long-term changes in the level of light pollution Type Journal Article
  Year 2013 Publication Monthly Notices of the Royal Astronomical Society Abbreviated Journal Monthly Notices of the Royal Astronomical Society  
  Volume 435 Issue 1 Pages 303-310  
  Keywords light pollution methods; data analysis methods; observational site testing; comets; measurements; light pollution; skyglow  
  Abstract In this paper, I present a new method that has been developed for determining the brightness of a cloudless night sky, on the basis of widely available amateur observations of comets. The tests show the correctness of the method, which makes it possible to determine the level of light pollution, defined as the brightness of the artificial sky glow, through the use of the archival observations of comets. The use of data bases of comet observations in Poland in the period 1994–2009 has led to a positive verification of the known model map of the brightness of the night sky. Also, it has been possible to find changes in the level of light pollution in this period, at the selected observation sites.  
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  Series Volume Series Issue Edition  
  ISSN 0035-8711 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 266  
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Author Johansson, M.; Pedersen, E.; Maleetipwan-Mattsson, P.; Kuhn, L.; Laike, T. url  doi
openurl 
  Title Perceived outdoor lighting quality (POLQ): A lighting assessment tool Type Journal Article
  Year 2013 Publication Journal of Environmental Psychology Abbreviated Journal Journal of Environmental Psychology  
  Volume 39 Issue Pages 14-21  
  Keywords Perception; Street lighting; Observation-based environmental assessment; Urban space  
  Abstract A shift towards more energy-efficient light sources for outdoor lighting such as light-emitting diodes (LEDs) is underway. Photometric measures are not sufficient to capture how users experience the light, so complementary tools are required. This study aimed to develop an observer-based environmental assessment tool, based on bipolar semantic differentials, for outdoor lighting in urban spaces. Exploratory (N = 130) and confirmatory (N = 117) factor analyses of observations of lighting installations made by laypersons on-site along pedestrian paths, resulted in two dimensions of high reliability: the Perceived Strength Quality (PSQ, Cronbach's alpha = 0.82–0.85) and the Perceived Comfort Quality (PCQ, Cronbach's alpha = 0.77–0.81). PSQ and PCQ differentiated between light sources of different illuminance level, colour temperature and colour rendering. Regression analyses showed that the perceived lighting qualities helped to explain the variance in visual accessibility, whereas PCQ helped to explain perceived danger in the environment. The perceived lighting qualities can add to the understanding of pedestrians' perception of outdoor lighting, and is proposed as a complementary tool for development of sustainable light designs in the urban environment.  
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  ISSN 0272-4944 ISBN Medium  
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  Notes Approved no  
  Call Number IDA @ john @ Serial 279  
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Author Jou, J.-H.; Hsieh, C.-Y.; Tseng, J.-R.; Peng, S.-H.; Jou, Y.-C.; Hong, J.H.; Shen, S.-M.; Tang, M.-C.; Chen, P.-C.; Lin, C.-H. url  doi
openurl 
  Title Candle Light-Style Organic Light-Emitting Diodes Type Journal Article
  Year 2013 Publication Advanced Functional Materials Abbreviated Journal Adv. Funct. Mater.  
  Volume 23 Issue 21 Pages 2750-2757  
  Keywords organic light emitting diodes; candle light; firelight; OLED; CRI; color rendition  
  Abstract In response to the call for a physiologically-friendly light at night that shows low color temperature, a candle light-style organic light emitting diode (OLED) is developed with a color temperature as low as 1900 K, a color rendering index (CRI) as high as 93, and an efficacy at least two times that of incandescent bulbs. In addition, the device has a 80% resemblance in luminance spectrum to that of a candle. Most importantly, the sensationally warm candle light-style emission is driven by electricity in lieu of the energy-wasting and greenhouse gas emitting hydrocarbon-burning candles invented 5000 years ago. This candle light-style OLED may serve as a safe measure for illumination at night. Moreover, it has a high color rendering index with a decent efficiency.  
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  ISSN 1616301X ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 284  
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