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Author Van der Westhuyzen, J.G.J., Leuschner, F.W. url  doi
openurl 
  Title The effect of age on white light perception Type Journal Article
  Year 2018 Publication (up) International Journal of Sustainable Lighting Abbreviated Journal  
  Volume 20 Issue 2 Pages 29-43  
  Keywords Vision; Psychology  
  Abstract The way that persons from different age groups experience “white light” is investigated. Human eye lens transmission changes spectrally with age and this may influence the way that humans from different ages experiences light. Such a difference may be important in industrial and medical environments. Two different age groups, one group younger than 40 years of age and another group older than 50 years of age were subjected to the same “white” definition task.A conventional single-booth setup was used where observers were able to adjust the intensity of four coloured LED’s.Results of the psychophysical test procedure were used to generate specifications of two light sources, as selected by the two age groups. The two age groups selected different light sources when tasked to achieve a “perception” of white. Results show that the older group prefers a source with a colour rendering index number of 89 and the younger group prefers a source with a colour rendering index number of 74. The sources selectedby the two age groups specifycorrelated colour temperature values of 5150 K for the older age group and 6592 K for the younger group.  
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  Call Number NC @ ehyde3 @ Serial 2065  
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Author Bará, S., Lima, R.C. url  doi
openurl 
  Title Photons without borders: quantifying light pollution transfer between territories Type Journal Article
  Year 2018 Publication (up) International Journal of Sustainable Lighting Abbreviated Journal  
  Volume 20 Issue 2 Pages 51-61  
  Keywords Skyglow  
  Abstract The light pollution levels experienced at any given site generally depend on a wide number of artificial light sources distributed throughout the surrounding territory. Since photons can travel long distances before being scattered by the atmosphere, any effective proposal for reducing local light pollution levels needs an accurate assessment of the relative weight of all intervening light sources, including those located tens or even hundreds of km away. In this paper we describe several ways of quantifying and visualizing these relative weights. Particular emphasis is made on the aggregate contribution of the municipalities, which are -in many regions of the world- the administrative bodies primarily responsible for the planning and maintenance of public outdoor lighting systems.  
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  Notes Approved no  
  Call Number NC @ ehyde3 @ Serial 2066  
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Author Meier, J. url  openurl
  Title Contentious Light: An Analytical Framework for Lighting Conflicts Type Journal Article
  Year 2018 Publication (up) International Journal of Sustainable Lighting Abbreviated Journal  
  Volume 20 Issue 1 Pages 62-77  
  Keywords Society; Lighting; Planning  
  Abstract This paper takes into view the broad range of contemporary conflicts regarding outdoor lighting. It proposes a working-definition that allows for differentiating lighting conflicts from other forms of lighting-related contention, as well as an analytical framework that allows for the structured description of individual lighting conflicts, and the comparative analysis of multiple cases. The analytical framework was developed based on the social-scientific analysis of media reports of existing conflict cases in Europe and North America, and informed by existing knowledge from the fields of lighting and conflict studies. A central challenge for developing such a framework is dealing with the high level of contingency and complexity of lighting conflicts. The framework reduces this complexity by focusing its field of vision to those aspects that are directly related to the lighting and its contestation. For each of these aspects, it provides sets of descriptive variables that allow for describing the conflicts’ individuality in a standardized – and thus comparable – way. The framework strictly separates the regarded aspects from their judgment by the conflict parties, making it possible to contrast their views on one and the same lighting situation. A visual template supports the process of analysis. It allows for depicting individual cases in short, and for clearly identifying where perspectives differ. At the multiple-case level, the framework not only opens up possibilities for spatial and temporal comparisons of lighting conflicts and the subsequent development of typologies, but also for harnessing their potential for informing the development of more sustainable planning and policy approaches for artificial lighting.  
  Address Department of Urban and Regional Planning, Technische Universität Berlin, Germany; josiane.meier(at)tu-berlin.de  
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  Publisher IJSL Place of Publication Editor  
  Language English Summary Language English Original Title  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2190  
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Author Landis, E.G.; Yang, V.; Brown, D.M.; Pardue, M.T.; Read, S.A. url  doi
openurl 
  Title Dim Light Exposure and Myopia in Children Type Journal Article
  Year 2018 Publication (up) Investigative Ophthalmology & Visual Science Abbreviated Journal Invest Ophthalmol Vis Sci  
  Volume 59 Issue 12 Pages 4804-4811  
  Keywords Human Health  
  Abstract Purpose: Experimental myopia in animal models suggests that bright light can influence refractive error and prevent myopia. Additionally, animal research indicates activation of rod pathways and circadian rhythms may influence eye growth. In children, objective measures of personal light exposure, recorded by wearable light sensors, have been used to examine the effects of bright light exposure on myopia. The effect of time spent in a broad range of light intensities on childhood refractive development is not known. This study aims to evaluate dim light exposure in myopia. Methods: We reanalyzed previously published data to investigate differences in dim light exposure across myopic and nonmyopic children from the Role of Outdoor Activity in Myopia (ROAM) study in Queensland, Australia. The amount of time children spent in scotopic (<1-1 lux), mesopic (1-30 lux), indoor photopic (>30-1000 lux), and outdoor photopic (>1000 lux) light over both weekdays and weekends was measured with wearable light sensors. Results: We found significant differences in average daily light exposure between myopic and nonmyopic children. On weekends, myopic children received significantly less scotopic light (P = 0.024) and less outdoor photopic light than nonmyopic children (P < 0.001). In myopic children, more myopic refractive errors were correlated with increased time in mesopic light (R = -0.46, P = 0.002). Conclusions: These findings suggest that in addition to bright light exposure, rod pathways stimulated by dim light exposure could be important to human myopia development. Optimal strategies for preventing myopia with environmental light may include both dim and bright light exposure.  
  Address School of Optometry and Vision Science, Queensland University of Technology, Brisbane, Queensland, Australia  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0146-0404 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:30347074; PMCID:PMC6181186 Approved no  
  Call Number NC @ ehyde3 @ Serial 2097  
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Author Lu, H.; Zhang, M.; Sun, W.; Li, W. url  doi
openurl 
  Title Expansion Analysis of Yangtze River Delta Urban Agglomeration Using DMSP/OLS Nighttime Light Imagery for 1993 to 2012 Type Journal Article
  Year 2018 Publication (up) ISPRS International Journal of Geo-Information Abbreviated Journal Ijgi  
  Volume 7 Issue 2 Pages 52  
  Keywords Remote Sensing  
  Abstract Investigating the characteristics of urban expansion is helpful in managing the relationship between urbanization and the ecological and environmental issues related to sustainable development. The Defense Meteorological Satellite Program/Operational Line-scan System (DMSP/OLS) collects visible and near-infrared light from the Earth’s surface at night without moonlight. It generates effective time series data for mapping the dynamics of urban expansion. As a major urban agglomeration in the world, the Yangtze River Delta Urban Agglomeration (YRDUA) is an important intersection zone of both the “Belt and Road Initiative” and the “Yangtze River Economic Belt” in China. Therefore, this paper analyses urban expansion characteristics of the YRDUA for 1993–2012 from urban extents extracted from the DMSP/OLS for 1993, 1997, 2002, 2007, and 2012. First, calibration procedures are applied to DMSP/OLS data, including intercalibration, intra-annual composition, and inter-annual series correction procedures. Spatial extents are then extracted from the corrected DMSP/OLS data, and a threshold is determined via the spatial comparison method. Finally, three models are used to explore urban expansion characteristics of the YRDUA from expansion rates, expansion spatial patterns, and expansion evaluations. The results show that the urban expansion of the YRDUA occurred at an increasing rate from 1993–2007 and then declined after 2007 with the onset of the global financial crisis. The Suxichang and Ningbo metropolitan circles were seriously affected by the financial crisis, while the Hefei metropolitan circle was not. The urban expansion of the YRDUA moved from the northeast to the southwest over the 20-year period. Urban expansion involved internal infilling over the first 15 years and then evolved into external sprawl and suburbanization after 2007.  
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  ISSN 2220-9964 ISBN Medium  
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  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1813  
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