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Author Sweater-Hickcox, K.; Narendran, N.; Bullough, J.; Freyssinier, J. url  doi
openurl 
  Title Effect of different coloured luminous surrounds on LED discomfort glare perception Type Journal Article
  Year 2013 Publication Lighting Research and Technology Abbreviated Journal Lighting Research and Technology  
  Volume 45 Issue 4 Pages 464-475  
  Keywords perception; subjective; LED; LED lighting; spectral power distribution; SPD  
  Abstract Recently, there has been increased interest in energy-efficient lighting as energy resources become higher in demand. Anecdotal evidence suggests that certain populations believe light-emitting diodes (LED) produce more glare than traditional technologies. This may be due to a number of factors such as spectral power distribution (SPD), source luminance, or beam intensity distribution. A study was conducted to assess the effect of different SPDs on the perception of discomfort glare from an LED source. For the range of conditions evaluated, the presence of any luminous surround significantly reduced the perception of discomfort glare from the LED array. The blue luminous surround reduced discomfort glare perception significantly less than the white or the yellow luminous surrounds. The implications for solid-state lighting systems are discussed.  
  Address Lighting Research Center, Rensselaer Polytechnic Institute, Troy, NY, USA  
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  Series Volume Series Issue Edition  
  ISSN 1477-1535 ISBN Medium  
  Area Expedition Conference (up)  
  Notes Approved no  
  Call Number IDA @ john @ Serial 338  
Permanent link to this record
 

 
Author Shillo, R., & Halevy, A. H. url  openurl
  Title Interaction of photoperiod and temperature in flowering-control of Gypsophila paniculata L Type Journal Article
  Year 1982 Publication Scientia Horticulturae Abbreviated Journal  
  Volume 16 Issue 4 Pages 385-393  
  Keywords Plants  
  Abstract Long day promotes flowering of Gysophila paniculata L cultivar ‘Bristol Fairy’. Repeated treatments with GA3 or GA4 + 7 in short days did not promote flowering. The long photoperiod is effective only at relatively high temperatures. At night temperatures below 12°C, the plants remain vegetative even in long days. Efficient artificial lighting is from incandescent lamps at 60–100 lux. Fluorescent lighting (Cool-White) is not effective. Lighting of 4 hours as a night-break or at the end of the night were equally effective, but 4 hours lighting as a day-extension was less effective. Whole-night lighting promoted flowering more than any of the 4-hour lighting regimes. Cyclic lighting of one third light in each cycle promoted flowering to the same extent as continuous lighting. Light intensity during the day has a decisive effect on flower production.  
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  Notes Approved no  
  Call Number IDA @ intern @ Serial 2370  
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Author Johnson, A.; Phadke, A.; de la Rue du Cann, S. url  openurl
  Title Energy Savings Potential for Street Lighting in India Type Journal Article
  Year 2014 Publication Lawrence Berkely National Laboratory report Abbreviated Journal  
  Volume Issue Pages  
  Keywords Energy; India; South Asia  
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  Notes Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial 432  
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Author Lyytimäki, J. url  doi
openurl 
  Title Nature's nocturnal services: Light pollution as a non-recognised challenge for ecosystem services research and management Type Journal Article
  Year 2013 Publication Ecosystem Services Abbreviated Journal Ecosystem Services  
  Volume 3 Issue Pages e44-e48  
  Keywords Economics; Ecosystem disservices; Ecosystem services; Environmental management; Light pollution; Scotoecology; Shifting baselines  
  Abstract Research focusing on ecosystem services has tackled several of the major drivers of environmental degradation, but it suffers from a blind spot related to light pollution. Light pollution caused by artificial night-time lighting is a global environmental change affecting terrestrial, coastal and marine ecosystems. The long-term effects of the disruption of the natural cycles of light and dark on ecosystem functioning and ecosystem services are largely unknown. Even though additional research is clearly needed, identifying, developing and implementing stringent management actions aimed at reducing inadequately installed, unnecessary or excessive lighting are well justified. This essay argues that management is hampered, because ecosystem services from nocturnal nature are increasingly underappreciated by the public due to shifting baseline syndrome, making most people accustomed to constantly illuminated and light-polluted night environments. Increased attention from scientists, managers and the public is needed in order to explicate the best options for preserving the benefits from natural darkness.  
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  Series Volume Series Issue Edition  
  ISSN 2212-0416 ISBN Medium  
  Area Expedition Conference (up)  
  Notes Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial 433  
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Author Morrow, E.N.; Hutton, S.A. url  openurl
  Title The Chicago Alley Lighting Project: Final Evaluation Report Type Journal Article
  Year 2000 Publication Illinois Criminal Justice Information Authority Abbreviated Journal  
  Volume Issue Pages  
  Keywords Public Safety  
  Abstract Begun in October of 1998, the first part of the plan sought to upgrade and improve the city's 175,000 streetlights, which illuminate the arterial and residential streets. The second part of the plan involved repairing and upgrading the lighting in and around viaducts and Chicago Transit Authority stations. The final part of the plan has been to boost lighting levels in alleys across the city as a tool for public safety and fighting crime. In the past, 90-watt lights illuminated most city alleys; alley lighting levels have been increased by installing new fixtures that can accommodate 250-watt bulbs. The Illinois Criminal Justice Information Authority undertook an evaluation to assess the impact of increased alley lighting on crime rates in two eight-square-block areas, with emphasis on crimes that were most likely to have occurred in alleys. The evaluation first examined change in the experimental area that received increased alley lighting over a 1-year period prior to increased alley lighting and a 1-year period thereafter. Next, change over a 6-month period before and after increased alley lighting was examined for both the experimental area and the control area. The evaluation found that reported offenses increased between the 1-year preinstallation and 1-year postinstallation study period in the experimental area where alley lighting was improved. The evaluation also found that the experimental area experienced more notable increases in reported incidents over a 6-month preinstallation and 6-month postinstallation study period compared to the control area. The evaluation could not provide a definitive explanation of these findings.  
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  Notes Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial 453  
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